What is molar mass of calcium phosphate?

Answers

Answer 1

The molar mass of calcium phosphate Ca₃(PO₄)₂ is 310 g. Molar mass is the aggregate of the masses of all the individual atoms present in a molecule or compound.

The chemical formula of calcium phosphate is Ca3(PO4)2. The atomic mass of calcium Ca is 40 u. The atomic mass of phosphorus P is 31 u. The atomic mass of Oxygen is 16 u.

The molecular mass of calcium phosphate = (atomic mass of calcium) × 3 + (atomic mass of phosphorus) × 2 + (atomic mass of oxygen) × 8

= (40 × 3) + (31 × 2) + (16 × 8)

= 310 g.

Therefore the molecular mass of calcium phosphate is 310 g.

Calcium phosphate, also called tricalcium phosphate, is a kind of mineral.

To learn more about the molar mass of calcium phosphate visit here:

https://brainly.com/question/24183428

#SPJ4


Related Questions

Calculate the mass in grams of the solute ( sulfuric acid ) in 2. 00 ml of 18. 5 m h2so4, concentrated sulfuric acid.

Answers

The mass of sulfuric acid in 2.00 mL of 18.5 M [tex]H_{2} SO_{4}[/tex] is 37.0 mg. Sulfuric acid has a molar mass of 98 g/mol.

To calculate the mass of sulfuric acid in 2.00 mL of 18.5 M [tex]H_{2} SO_{4}[/tex], we need to first convert the volume from milliliters to liters and then multiply that by the concentration in moles/liter. Then, we can multiply the number of moles by the molar mass to get the mass in grams. The mass of 2.00 mL of 18.5 M [tex]H_{2} SO_{4}[/tex] is:

(2 x [tex]10^{-6}[/tex] L) x (18.5 mol/L) x (98 g/mol) = 37.0 mg.

Learn more about  concentrated sulfuric acid:

https://brainly.com/question/8673785

#SPJ4

You find a mineral sample that is yellow, has a white streak, and has a
hardness of 2.5., The sample is most likely which mineral?
Mineral
Gold
Color
Streak
Golden yellow Yellow
Yellowish gray
to gray
Black
Reacts with Hardness
hydrochloric
acid
No
No
2.5-3
6-6.5






A. Pyrite
B. Calcite
C. Sulfur
D. Gold

Answers

You find a mineral sample that is yellow, has a white streak, and has a hardness of 2.5 therefore the sample is most likely a mineral known as calcite and is therefore denoted as option B.

What is a Calcite?

This is referred to as a carbonate mineral and the most stable polymorph of calcium carbonate. It is a very common mineral, particularly as a component of limestone.

It has a hardness in the region of 3 and is yellow, has a white streak in terms of the color and appearance and is therefore the reason why it was chosen as the correct choice.

Read more about Calcite here https://brainly.com/question/3817092

#SPJ1

Atoms can be "cooled" to incredibly low temperatures by letting them interact with a laser beam. Various novel quantum phenomena appear at these temperatures. What is the rms speed of cesium atoms that have been cooled to a temperature of 120 nKnK ? Express your answer to two significant figures and include the appropriate units.

Answers

In light of this, the rms speed of cesium atoms at a temperature of 120 nK is roughly 107 m/s.

Why are atoms called?

Because it was formerly believed that atoms were the smallest objects in the world and could not be separated, the word "atom" is derived from the Greek word for "indivisible." Chemistry's fundamental building block is an atom. It is the tiniest portion of matter within which charged particles could be released

How atoms are formed?

Protons, neutrons, & electrons surround the central nucleus of an atom, which is what makes up an atom. The fission process, which divides uranium into smaller atoms, produces new atoms. The Big Bang and Supernova occurrences demonstrate the massive amount of atoms that were created. As the universe grew larger and cooled, events slowed down. It took 380,000 years for the first atoms to form after electrons were locked in orbits around nuclei. These mostly consisted of helium and hydrogen, which continue to be the universe's two most plentiful components.

The following formula can be used to determine the root mean square (rms) speed of cesium atoms that have been cooled to a temperature of 120 nK:

v = sqrt((3kT)/m)

where m is the mass of a cesium atom, T is the temperature in Kelvin, k is the Boltzmann constant, and v is the rms speed.

The mass of a cesium atom is approximately 132.91 atomic mass units (amu), which is equivalent to 2.2067 x 10^-25 kg.

When we change the values, we obtain:

v = sqrt((3 * 1.38 x 10^-23 J/K * 120 x 10^-9 K) / 2.2067 x 10^-25 kg)

v = 107 m/s

To know more about Atoms visit:

https://brainly.com/question/1566330

#SPJ4

What is Ammonium phosphate molar mass?

Answers

The molar mass of Ammonium phosphate is 149.08674 g/mol.


Ammonium phosphate is a chemical compound with the formula (NH₄)₃PO₄. It is made up of three ammonium ions (NH⁴⁺) and one phosphate ion (PO⁴⁻).

To find the molar mass of Ammonium phosphate, we need to add the molar masses of all the atoms in the compound. The molar mass of an atom is the mass of one mole of that atom.

The molar mass of Ammonium phosphate is:

3 x (molar mass of NH⁴⁺) + (molar mass of PO⁴⁻)

= 3 x (14.007 + 4 x 1.008) + (30.974 + 4 x 15.999)

= 3 x 18.039 + 94.971

= 54.117 + 94.971

= 149.08674 g/mol

Therefore, the molar mass of Ammonium phosphate is 149.08674 g/mol.

To know more about  molar mass here:

https://brainly.com/question/12127540#

#SPJ11

rank the following compounds from weakest to strongest intermolecular force:
H2O, CHF3, Cl2, CCl4, HF, CH3F

Answers

Dipole-dipole interaction pales in comparison to the strength of the polar covalent bond. Whereas the latter is known as an intermolecular attraction.

What does a covalent bond's shared pair represent?

Equal shares of electrons from the two involved atoms result in the formation of a covalent bond. This sort of bonding's electron pair is known as the shared pair or binding pair.

Why is it called covalent?

See Covalent for other uses (disambiguation). A chemical bond known as a covalent bond entails the exchange of two electrons between atoms. When atoms share electrons, a stable equilibrium of the repellent and attractive forces between them is known as bond formation. These pairs of electrons are also known as pairs that are shared or bonding pairs.

To know more about covalent visit:

https://brainly.com/question/30261436

#SPJ1

How many grams of NaOH are required to produce 9.23 moles of NaCl?

Step-by-step please

Answers

Answer:

369.20 grams of NaOH are required to produce 9.23 moles of NaCl.

Explanation:

To answer this question, we need to know the balanced chemical equation for the reaction between NaOH and HCl, assuming that the reaction takes place in an aqueous solution:

NaOH + HCl → NaCl + H2O

According to this equation, 1 mole of NaOH reacts with 1 mole of HCl to produce 1 mole of NaCl and 1 mole of water.

To calculate the amount of NaOH required to produce 9.23 moles of NaCl, we need to use the mole ratio between NaOH and NaCl from the balanced equation. Since the mole ratio is 1:1, we know that we need 9.23 moles of NaOH to produce 9.23 moles of NaCl.

The molar mass of NaOH is 40.00 g/mol, which means that 1 mole of NaOH weighs 40.00 grams. Therefore, 9.23 moles of NaOH weighs:

9.23 moles x 40.00 g/mol = 369.20 grams of NaOH

So, 369.20 grams of NaOH are required to produce 9.23 moles of NaCl.

Why is carbon not a metal or nonmetal?

Answers

Carbon is a non-metal because, in its elemental state, it cannot form a metallic bond and conduct electricity.

Carbon is a non-metal since it lacks characteristics of metals including ductility, lustre, malleability, electrical conductivity, etc. Moreover, it creates covalent bonds. Carbon is a non-metallic, solid element. Diamond and graphite are two extremely distinct types of pure carbon that may occur.

A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Carbon lacks the malleability and ductility that are generally seen in metals, which may be hammered into thin sheets or dragged into wires.

To know more about carbon, visit,

https://brainly.com/question/19083306

#SPJ4

what is the boiling point of h2?

Answers

The boiling point of the H₂ is the  20 K 0r the –423 ºF; or the –253 ºC .

The boiling point is defined as the temperature of the liquid at which its vapor pressure will be equal to the pressure of the gas or the above it. The normal boiling point of the liquid is the temperature at which the vapor pressure is equal to the one atmosphere or the 760 torr. The boiling point of the substance is the temperature when the vapor pressure of the liquid is equals to the pressure of the surrounding the liquid and the liquid will changes into the  vapor.

Thus in the kelvin the boiling point of the H₂ is the  20 K.

To learn more about boiling point here

https://brainly.com/question/2153588

#SPJ4

What is an example of a mixture of elements?

Answers

The examples of the mixture of the elements is the Brass, it is the  example of a mixture of the two elements that is the  copper and the zinc.

The Brass is the example of the mixture of the two elements the one is  copper and the other is  zinc. The brass can contain the little as the 10%, or as much as the 45%, zinc. The difference in between the compounds and the mixtures of the elements are the ease that with which the elements will be separated.

The mixture of the elements are consists of the two or the more different elements and the compounds that physically intermingled.

To learn more about elements here

https://brainly.com/question/14347616

#SPJ4

What is the percent composition of hydrogen In hydrosulfuric acid? [also the rest of the questions if you’re up for the challenge]

Answers

Hydrogen composition H= 5.93%

Which molecules are bound to hemoglobin when hemoglobin is in the R state? CO2,
3-bisphosphoglycerate Fel2+ oxygen Fe+

Answers

The offered statement states that oxygen atoms are bonded to hemoglobin when it is in the R state.

Do people make up molecules or atoms?

The molecules that make up the human body are incredibly diverse, but they are all combinations of just a few dozen basic constituents: the elements of period 3 that are chemical. However, there are significant differences in each atom's abundance.

What binds molecules collectively?

Chemical bonds, which are required for the existence of chemicals, are the temporary connections that bind compounds together. London dispersion forces and ionic, solid, and hydrogen bonds are examples of chemical bonding.

To know more about Molecules visit:

https://brainly.com/question/26556885

#SPJ4

Include one paragraph to explain the movement of energy during phase transitions.(solid, liquid gas)

just a quick 4 or 5 sentences about the 3 states of matter you wrote yourself please(i dpnt care how detailed it is)

Answers

The energy movement from solid liquid to gas is always going up and moving faster. A solid is a tight definite shape where the molecules are all stuck in one place and there’s barely energy and movement. The liquid has a more free space since it does not have a definite volume energy moves around quicker. The gas phase would have energy going everywhere Becuase it doesn’t have a definite shape and volume. As temperature goes up the kinetic energy also goes up

does freezing involve the creation of a crystal structure

Answers

The majority of liquids freeze through crystallisation, which is the development of crystalline solid from the homogeneous liquid.

Does freezing create a crystal structure?

Because the oxygen atom draws a greater proportion of electrons, the water molecule is slightly positive on one side and slightly negative on the other. The hexagonal crystal lattice is formed when bipolar molecules in water freeze and are drawn near one another.

When a liquid's molecules slow down enough to attract one another and organise themselves into stable places as a solid, freezing happens. Salt water is cooled to create pure ice crystals during the freezing process, also known as crystallisation.

When atoms, molecules, or ions are grouped in a highly ordered microscopic structure, the result is a substance known as a crystal. Chemical bonds such as metallic bonds, ionic bonds, covalent bonds, van der Waals bonds, and others serve as the interatomic forces that hold these components together.

To learn more about crystal structure refer to:

https://brainly.com/question/195576

#SPJ4

How many liters of glycerin should be added to 12 liters of an 8% glycerin solution so that the resulting solution contains 16% glycerin? round the answer to the nearest hundredth if necessary. Original (l)added (l)new (l)amount of glycerin0. 96x0. 96 + xamount of solution12x12 + x0. 18 liter1. 14 liters1. 92 liters2. 10 liters.

Answers

A total of 0.96 liters of glycerin should be added to 12 liters of an 8% glycerin solution to result in a solution containing 16% glycerin.

To determine the amount of glycerin that should be added to 12 liters of an 8% glycerin solution to result in a solution containing 16% glycerin, we can use the formula for dilution:

C1V1 = C2V2, where C is the concentration, and V is the volume.

In this case, C1 is the original concentration of glycerin (8%), V1 is the original volume of the solution (12 liters), C2 is the desired concentration of glycerin (16%), and V2 is the final volume of the solution.

Learn more about Glycerin:

https://brainly.com/question/14012268


#SPJ4

Which metal oxide will be reduced by heating with iron?
A calcium oxide
B lead oxide
C magnesium oxide
D zinc oxide

Answers

Answer:

calcium oxide

Explanation:

Correct option is A)

Magnesium metal is an alkaline earth metal. The tendency of these metals is to lose electron. They lose electron and form oxide. Now, they are stable hence it is very difficult for them to again gain that electron. Hence, they are not reduced by normal reducing agents.

You make a solution of a nonvolatile solute with a liquid solvent. Indicate whether each of the following statements is true or false. (a) The freezing point of the solution is higher than that of the pure solvent. (b) The freezing point of the solution is lower than that of the pure solvent. (C) The boiling point of the solution is higher than that of pure solvent. (d) The boiling point of the solution is lower than that of the pure solvent.

Answers

The solution's freezing point is higher than the solvent's pure freezing point. The solution has a boiling point that is greater than a pure solvent.

What happens when you add a nonvolatile solute to a liquid?

The boiling point of a solvent increases and the vapour pressure decreases when a nonvolatile solute is added. A substance that does not readily evaporate is referred to as a nonvolatile solute.

When non-volatile substances are added to a solvent, the vapour pressure is reduced, and the solute particles have an impact on how pure solvent crystals form. According to numerous studies, the amount of solutes dissolved in the solvent directly correlates to the drop in freezing point. The vapour pressure of a non-volatile solute drops when it is dissolved in a volatile solvent.

Therefore, the correct answer is option

(a) The freezing point of the solution is higher than that of the pure solvent.

(C) The boiling point of the solution is higher than that of pure solvent.

To learn more about freezing point refer to:

https://brainly.com/question/40140

#SPJ4

What is the generic name of gabapentin?

Answers

The generic name of the gabapentin is the  Neurontin. The Gabapentin is used to treat the epilepsy.

The generic name of the gabapentin and It is also taken for the nerve pain, and which can be caused by the different conditions, it also diabetes and the shingles. The Nerve pain can also be happen after the injury. The Gabapentin is generally used to treat the some types of the nerve pain but it is also classified as the anticonvulsant medicine, but it is not used as the opioid or the painkiller.

Thus, the Neurontin is the generic name of the gabapentin.

To learn more about gabapentin here

https://brainly.com/question/27961103

#SPJ4

PLEASEEEEEEEE HELP ON THIS

Answers

The answer is 4
m1=5
m2=20
d=5
(5*20) / (5^2)
100 / 25
Equals 4

Which of the following is an advantage of visible light space-telescopes have over ground-based telescopes?
Group of answer choices

They are cheaper

They have a larger telescope diameter

They are easier to repair

They don't have to deal with the Earth's atmosphere

Answers

Answer:

They don't have to deal with the Earth's atmosphere

Explanation:

Space telescopes have the advantage of being above the blurring effects of the Earth's atmosphere

What is the name of the organic compound ch3 ch2 ch2 ch3?

Answers

The name of the organic compound CH₃CH₂CH₂CH₃ is butane.

Butane is an alkane with four carbon atoms and a straight chain. The prefix "but-" indicates four carbon atoms, and the suffix "-ane" indicates that the molecule is an alkane with all single bonds between the carbon atoms.

The molecular formula for butane is C₄H₁₀. Butane is a highly flammable gas at room temperature and pressure, and it is commonly used as a fuel for lighters, camping stoves, and other portable heaters. It is also used as a refrigerant, propellant, and solvent in various industrial applications.

It is a member of the homologous series of alkanes, which have the general formula CnH₂n+2, where n is the number of carbon atoms in the molecule.

To know more about organic compound here

https://brainly.com/question/5994723

#SPJ4

how do you understand equivalence point and find the equivalence point from the two titration curves? you may remember endpoint from your previous acid-base titration experiment. do you have an endpoint in this titration? how do you distinguish endpoint and equivalence point?

Answers

In acid-base titration, the equivalence point is the point at which the acid and base are stoichiometrically balanced and neutralize each other.

At this point, the moles of acid are equivalent to the moles of base, and the solution is neither acidic nor basic. The equivalence point is often identified by a sudden and sharp change in pH.

Unlike the endpoint, which is determined using indicators, the equivalence point is calculated mathematically based on the stoichiometry of the reaction. However, the two points may not always coincide due to the nature of the indicators or the presence of impurities in the sample.

To find the equivalence point, one can plot the titration curve by plotting the pH of the solution against the volume of titrant added. The equivalence point is the midpoint of the steepest part of the curve, where the pH changes most rapidly. It is essential to distinguish between the endpoint and the equivalence point as they mark different stages in the titration process and can affect the accuracy of the results.

Find out more about   acid-base titration

brainly.com/question/29036708

#SPJ4

What are the electron and molecular geometry of BrF5 ?

Answers

The electron geometry of BrF₅ is octahedral and the molecular geometry is square pyramidal.



To determine the electron and molecular geometry of BrF₅ , we can use the VSEPR theory. The VSEPR theory predicts the arrangement of electron pairs around a central atom and the resulting molecular geometry.

1. Determine the number of valence electrons for BrF5. Br has 7 valence electrons and each F has 7 valence electrons, so the total number of valence electrons is 7 + (5 x 7) = 42.

2. Draw the Lewis structure for BrF₅ . Place the Br atom in the center and the F atoms around it. Each F atom will form a single bond with the Br atom, using 2 electrons for each bond. This leaves 22 valence electrons, which will be used to form lone pairs around the F atoms.

3. Determine the electron geometry. The Br atom is surrounded by 5 bonding electron pairs and 1 lone pair, giving a total of 6 electron pairs. The electron geometry for 6 electron pairs is octahedral.

4. Determine the molecular geometry. The Br atom is surrounded by 5 bonding electron pairs and 1 lone pair, giving a total of 6 electron pairs. The molecular geometry for 5 bonding pairs and 1 lone pair is square pyramidal.

To know more about BrF₅ here:

https://brainly.com/question/28298899#

#SPJ11



A chemical reaction is carried out in a closed container. The energy absorbed by the chemical reaction is 200 kJ.

How much thermal energy moves inward from the air or the walls of the container?

75 kJ

100 kJ

150 kJ

200 kJ

Answers

The energy absorbed by the chemical reaction is 200 kJ. 200 kJ is the thermal energy that moves inward from the air or the walls of the container. Therefore, the correct option is option D.

What is thermal energy?

Thermal energy is a sort of kinetic energy since it is generated by particle movement. Kinetic energy refers to the energy that an item possesses as a result of its motion. The more the form of heat of a body, the faster its atoms, molecules, or atoms travel.

A chemical reaction is carried out in a closed container. The energy absorbed by the chemical reaction is 200 kJ. 200 kJ is the thermal energy that moves inward from the air or the walls of the container.

Therefore, the correct option is option D.

To know more about thermal energy, here:

https://brainly.com/question/3022807

#SPJ1

How do you write the electron configuration for CA?

Answers

The electronic configuration of the calcium, Ca is as :

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² .

The atomic number of the calcium is 20. The total  number of the protons are 20 , the number of the electrons are 20, and the number of the neutrons are 40. The electronic configuration of the calcium is as follows :

The electronic configuration of calcium, Ca = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

The Calcium is the mineral most often it is associated with the healthy bones and the teeth.  It is belongs to the group 2 that is the metal, it is also known as the alkaline earth metal, and it had no populated d-orbital electrons.

To learn more about electronic configuration here

https://brainly.com/question/29757010

#SPJ4

the oxidation number of the manganese atom in mno₄⁻ is

Answers

The oxidation number  of the manganese atom in MnO₄⁻ is 7.Oxidation number can be negative,zero or positive.

Oxidation number in basic terms can be depicted as the number that is distributed to components in a synthetic blend. The oxidation number is fundamentally the include of electrons that iotas in a particle can share, lose or acquire while framing substance securities with different molecules of an alternate component.

Oxidation number is likewise alluded to as oxidation state. Nonetheless, some of the time these terms can have an alternate importance relying upon regardless of whether we are thinking about the electronegativity of the atoms. The oxidation number term is utilized often in coordination science.

So,oxidation number of Mn in MnO₄⁻=x+(-2) ˣ 4 =-1

=>x-8=-1

=>x=-1+8

=>x=7

Hence,oxidation number of Mn in MnO₄⁻ is 7.

To know more about oxidation number,visit here:

https://brainly.com/question/3035498

#SPJ4

Why is the Diels Alder reaction reversible at high temperatures?

Answers

As starting materials have a higher entropy than products, all Diels-Alder processes may be reverted to initial diene and dienophile at sufficiently high temperatures.

Cycloaddition reversibility is one of the factors that contribute to endo-selectivity loss. Cycloreversion reactions are particularly common in aromatic dienes (such as furan and anthracene). Retro-Diels-Alder reactions can be utilised to create reactive olefins or other -bonds utilising flash vacuum pyrolysis.

For this purpose, anthracene, 9,10-dimethylanthracene, cyclopentadiene, and dimethylfulvene seem to be particularly suitable. If heated enough, the product of a Diels-Alder reaction can undergo a reverse reaction that recharges the initial konnect and generates a set (which both happen to be cyclopentadiene in this case). The backward (or "retro") reaction seems to be the Diels-Alder reaction.

Learn more about Diels Alder reaction at

https://brainly.com/question/30751490

#SPJ4

Select the correct answer. Which of the following is true for all exergonic reactions?
A) The products have more total energy than the reactants.
B) The reactions proceed with a net release of free energy.
C) The reactions are always rapid.
D) The reactions only occur in certain organelles called exergonomes.

Answers

Exergonic reactions are reactions that release energy, typically in the form of heat, and have a negative Gibbs free energy change (ΔG). Option B) (The reactions proceed with a net release of free energy) is the right answer.

This means that the free energy of the products is lower than the free energy of the reactants, and the difference is released as usable energy. The net release of free energy makes exergonic reactions spontaneous and capable of doing work, such as driving endergonic reactions or powering cellular processes.

Option A is incorrect because the products of exergonic reactions have less total energy than the reactants. Option C is incorrect because the rate of exergonic reactions varies and can be slow or fast depending on the reaction. Option D is incorrect because there is no such thing as an "exergame."

Want to know more about exergonic reactions visit the link which is given below;

https://brainly.com/question/270229

#SPJ4

What is the term used to describe breaks in earth'crust by which rokes moves or slide past one another

Answers

The term used to describe breaks in the Earth's crust by which rocks move or slide past one another is "fault." Faults can be caused by tectonic plate movement.

Faults generates stress on the Earth's crust. When the stress becomes too great, the rocks along the fault plane can break and move, resulting in an earthquake. There are different types of faults, including normal faults, reverse faults, and strike-slip faults, depending on the direction of movement between the rocks.

Faults are essential in shaping the Earth's surface, and studying them can help geologists better understand the past and future movements of tectonic plates.

To know more about tectonic plate movement:

https://brainly.com/question/28988009

#SPJ4

Given that syn addition of H2H2 occurs from both sides of a trigonal planar double bond, draw allstereoisomers formed when each alkene is treated with Hâ2Hâ2.

Answers

When an alkene is treated with H2H2, the addition can occur from either face of the double bond, resulting in two different stereoisomers.

This is known as syn addition because the two hydrogen atoms are added to the same face of the alkene. The stereoisomers that result from the addition of H2 to an alkene will depend on the specific alkene and the arrangement of its substituents.

For example, when 1,2-dimethylcyclohexene is treated with H2H2, two stereoisomers are formed: (1R,2S) and (1S,2R). These stereoisomers can be differentiated by their molecular configurations, which are determined by the arrangement of the substituents on the cyclohexene ring and the position of the hydrogen atoms on the double bond.

Similarly, other alkenes will give rise to different stereoisomers upon syn addition of H2, depending on the specific alkene and its substituents.

To learn more about Stereoisomers:

https://brainly.com/question/16986110

#SPJ4

how many members of the house of representatives are up for re-election each election cycle?

Answers

All 435 members of the United States House of Representatives are up for re-election in each election cycle, which occurs every two years.

This means that every seat in the House of Representatives is up for grabs in the regular congressional elections that are held in November of even-numbered years. Each state is divided into congressional districts based on population, and each district elects one representative to serve in the House.

The terms of representatives are two years long, so all representatives must run for re-election every two years if they wish to continue serving in the House.

To learn more about election cycle  refer to:

brainly.com/question/14319666

#SPJ4

Other Questions
What does only integer scalar arrays can be converted to a scalar index mean? which carries oxygenated blood from the lungs to the heart?(a) main artery(b) pulmonary artery(c) main vein(d) pulmonary vein Was it the slaves who built the pyramids? What is 0900 military time? Q. 1 Identify three effects of mountain chains. (select all that apply)Select 3 correct answer(s)Rain Shadows Create DesertsBarriers to New SettlementsCreates Ring of FireHigher Temperatures at Higher ElevationsWater Sources Create RiversQ. 2 Identify two economic facts of Asia. (select all that apply)Select 2 correct answer(s)Becoming Competitive in Global EconomyAll Command EconomiesNo Economic UnionWestern Countries Build Here for Cheap LaborQ. 3 In three to five sentences, compare and contrast the standard of living in densely and sparsely populated areas of Asia. 44) gene s controls the sharpness of spines in a type of cactus. cacti with the dominant allele, s, have sharp spines, whereas homozygous recessive ss cacti have dull spines. at the same time, a second gene, n, determines whether or not cacti have spines. homozygous recessive nn cacti have no spines at all. if cacti heterozygous for both traits, ssnn, were allowed to self-pollinate, the offspring would segregate into which of the following phenotype ratios?a. all sharp-spined progeny.b. 25% sharp-spined, 50% dull-spined, 25% spineless progenyc. 50% sharp-spined, 50% dull-spined progeny.d. all spineless progenye. It is impossible to determine the phenotypes of the progeny. Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Share 28 sweet between amanda and busi in the ratio 3:1 I dont want to tell on anybody, Doug Smithson whispered to me. But I think you oughtto know, Mr. Larson, that Don Crimp didnt come all the way to school. He started with us, buthe didnt get here.Where did he go? I asked. Doug stood beside me and moved his left bare foot on thepine-board floor of Lonesome Valley Schoolhouse. Is he playing hooky? I asked.Yep, hes up there on the mountaintop, Doug said. Go to the door and look toward the skyand youll see him.Whats he doing up there? I asked in low tones. My Lonesome Valley pupils looked at oneanother. And then they stared at me as they listened to our discussion. Why doesnt he come ondown to school?Hes afraid, Mr. Larson, Doug whispered.1. What Doug says to Mr. Larson suggests that Douga) is not well liked.b) is a poor judge of character.c) rarely tells the truth.d) trusts Mr. Larson.2. The reader can see from the way he speaks that Doug isa) bitter.b) worried.c) angry.d) delighted.3. Mr. Larson seems to bea) too proud to care about Doug or Don.b) interested only in teaching the three Rs.c) eager to close school for the day and get home.d) willing to listen to Dougs story.4. Identify the sentence in which another character tells about Don Crimps feelings.a) He started with us, but he didnt get here.b) Yep, hes up there on the mountaintop,c) Whats he doing up there?d) Hes afraid, Mr. Larson,(PLS answer quick) please help me on this Robert Paine studied sea stars in the intertidal zone along the northern Pacific coast. When he removed sea stars from a study area, their prey, two mussel species, increased exponentially. This crowded out other species, and the overall biodiversity of the community was greatly reduced.What role in the community did the sea star play?a. Pathogenb. Keystone speciesc. Producerd. Prey species How do you play left right center with money? What are data ? A - Sources that summarize a primary source B - Educated guesses about the outcome of an experiment C - Pieces of information recorded in an experiment D - Variables that are adjusted by the experimenter The variables x and y vary inversely. Use the given values to write an equation relating xand y. Then find y when x = 4.1. x = 5, y = 2 14) Draw MN so that it is parallel to ST. If lauren doubles her quantity of shampoo consumed when her income rises by 100%, then lauren's income elasticity of demand for shampoo is oxygen and sulfur bonding patterns: build each of the indicated molecules below in the simulator and match them to the correct bonding pattern in respect to either oxygen or sulfur. remember if a molecule does not have a name when you build it is not a stable arrangement and you might have to reorder your atoms. for example: h2o - 2 single bonds as you complete the matching below think of the following: how do oxygen and sulfur atoms tend to bond in molecules? what patterns do you see? how many covalent bonds (total) do oxygen atoms or sulfur atoms tend to form? group of answer choices ocl2 [ choose ] no [ choose ] onh [ choose ] co2 (only describe one of the oxygen atoms) [ choose ] bs [ choose ] sis2 (only describe one of the sulfur atoms) [ choose ] WILL MARK BRAINLIEST. Two angles of a triangle measure 41 and 44.What is the measure of the third angle?OA) 75OB) 85OC) 95OD) 105 the most effective type of value proposition in business markets, generally, is known as Resonating Focus which focuses on a small number of benefits that motivate the customer and that are superior compared with the next-best alternative provided by a competitor. (true or false) How would the following changes in price affect total revenue? That is, would total revenue increase, decrease, or remain unchanged?Price falls and demand is inelastic: DecreasePrice rises and demand is elastic: DecreasePrice rises and supply is elastic: IncreasePrice rises and supply is inelastic: IncreasePrice rises and demand is inelastic: IncreasePrice falls and demand is elastic: IncreasePrice falls and demand is of unit elasticity: Remain unchanged