Only steroids are included in the principal chemical structures of hormones. How atoms are organized within molecules is referred to as chemical structure.
What mechanisms govern chemical structures?By showing the spatial arrangement the atoms and chemical bonds within the molecule, chemical structure describes how a compound's molecular geometry is formed. A crucial visual depiction of a molecular formula is thus given to scientists in this way. The chemicals known as enantiomers are chiral and mirror-imaged.
How can chemical structures be distinguished?When determining the structures of chemical compounds, one often strives to determine the pattern and strength of bonding between all of the atoms in the molecule; if possible, one also looks for the three-dimensional spatial coordinates of a atoms in the molecule.
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Consider the molecule c4H5n, which has the connectivity shown below.
After the Lewis structure for the molecule is completed, how many sigma and how many pi bonds are there in this molecule?
Express your answers as integers separated by a comma.
How many atoms in the molecule exhibit sp hybridization, sp^2 hybridization, and sp^3 hybridization?
Express your answers as integers separated by commas. Express your answers in the given order.
sp hybridization, sp^2 hybridization, and sp^3 hybridization:
The marketed medications with pyrrole ring systems are known to have a wide range of biological properties, including the antipsychotic, beta-adrenergic antagonist, anxiolytic, anticancer (leukemia, lymphoma, and myelofibrosis, among others), antibacterial, antifungal, antiprotozoal, antimalarial, and many more.
The relative abundances of the three identified C4H5 isomers vary depending on the type of precursor (1-butyne, 1,2-butadiene, and 1,3-butadiene). The overproduction of hydroxyhempyrolin is what causes pyrrole disorder (HPL). The HPL binds zinc and B6, preventing the body from utilizing them and causes their excretion in the urine and hair. HPL is a neurotoxic biomarker for oxidative stress. Kryptopyrrole testing in the urine is used to identify pyrrole disorders. The goal is to count the HPL molecules in your body. A high level could be a sign of pyrrole dysfunction.
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Let's shift the nitrogen and carbon atoms from left to right since the answer is 2,2,1. Three hydrogen atoms bonded to one carbon form an SP3 hybrid on carbon.
Carbon hybridised with carbon on both sides in SP. There is a triple bond tying these two carbon atoms together. Bonding between carbon atoms and N's SP hybridization Prior to N, the penultimate C is SP2 hybridised (2 bonds and 1 lone pair). The C and N in question have two bonds.
Answer: 2,2,1 Atoms, which are little bits of matter, are what distinguish one chemical element from the others. A negatively charged core nucleus and one or more orbiting electrons make up an atom. There may be the positively charged, somewhat massive protons and neutrons that make up the nucleus.
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If a car can accelerate at 7.5 mi/hr/s, what would be its final speed after 5.0 seconds if its starting speed were 50 mi/hr?
Final speed after 5.0 seconds if its starting speed were 50 mi/hr is 87.5 mi/hr.
What is acceleration?Acceleration is a vector quantity, meaning it has both a magnitude (or size) and a direction. The magnitude of acceleration is measured in units of meters per second squared (m/s²) or feet per second squared (ft/s²). The direction of acceleration is the direction in which the velocity of an object is changing.
There are different types of acceleration:
Positive acceleration refers to an increase in velocity, for example, when an object speeds up.
Negative acceleration or deceleration refers to a decrease in velocity, for example, when an object slows down.
Constant acceleration refers to when the rate of change of velocity is constant, for example, when an object is falling freely under the influence of gravity.
Zero acceleration refers to when an object is moving at a constant velocity, for example, when an object is moving in a straight line at a constant speed.
To calculate the final speed of a car that can accelerate at 7.5 mi/hr/s, we can use the equation:
final speed = initial speed + acceleration x time
In this case, the initial speed is 50 mi/hr, the acceleration is 7.5 mi/hr/s, and the time is 5.0 seconds.
So, the final speed would be:
50 mi/hr + (7.5 mi/hr/s x 5.0 s) = 50 mi/hr + 37.5 mi/hr = 87.5 mi/hr
Therefore, the final speed of the car after 5.0 seconds would be 87.5 mi/hr.
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What substances are produced when an acid reacts with base?
Answer:
Salt and water is produced.
For example:-
NaOH(base)+HCl(Acid)=>NaCl(salt)+H20(water)
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How many grams of phosphoric acid are formed from 36.4 grams of calcium phosphate?
Answer: Calcium phosphate (Ca3(PO4)2) and phosphoric acid (H3PO4) are two different compounds.
Explanation: In order to determine how many grams of phosphoric acid are formed from 36.4 grams of calcium phosphate, we would need to know the reaction taking place and the stoichiometry of that reaction. Without that information, it is impossible to determine how many grams of phosphoric acid are formed.
Answer:
calcium phosphate (ca3(po4)2) and phosphoric acid(h3po4)
which of the following volumes is the smallest?
A) one hectoliter
B) one deciliter
C) one milliliter
D) one liter
Answer:
one milliliter
Explanation:
In the metric system, the prefix m stands for “milli”, which means “1/1,000 of”. So 1 ml (milliliter) is only 1/1,000 of 1 l (liter). Therefore, 1 ml is smaller than 1 l.
the woman is using colorful letters to hold the drawing to the refrigerator. What type of force is pulling the letters toward refrigerator
Answer:
She is using magnetic force
Explanation:
Explain what happens to dry ice when it is exposed to air. What does it look like? Please write two
to three sentences about how this happens.
Dry ice, also known as solid carbon dioxide, sublimes when exposed to air. As dry ice sublimes, it appears to be "smoking" or "fogging" due to the condensation of the gaseous carbon dioxide in the air.
What is dry ice?Dry ice, also known as solid carbon dioxide, is a type of carbon dioxide that is in a solid state at temperatures below -109.3°F (-78.5°C). Unlike regular ice, which is made of water, dry ice is made of carbon dioxide. Due to its extremely low temperature, it is used primarily as a cooling agent, and often used to preserve food and medical products during transportation. It can also be used as a cleaning agent in industrial settings to remove oil and grease from machinery. Dry ice is also used in the dry ice blasting process which is an alternative to traditional cleaning methods like sand blasting and soda blasting. Dry ice is not stable at ambient temperature and pressure, it sublimes, meaning it goes from a solid to a gas without going through the liquid phase. This process causes it to shrink and disappear over time.To learn more about dry ice refer:
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Calcium,+ water yields calcium hydroxide+ hydrogen Complete lonic:Ca+2HeO?Ca ?
The complete ionic and balanced equation of displacement reaction will be - Ca + 2H20 – Ca(OH)2 + H2
In the given equation Calcium and Water yield together to form Calcium Hydroxide and Hydrogen. The reaction which takes place between calcium and water is the example of displacement reaction. In the displacement reaction in the given equation calcium is displaced by hydrogen from the water so to form Calcium Hydroxide.
In a displacement reaction atoms are displaced by another atom in any given molecule. Here the more reactive element displaces the less reactive element. Similar concept is used in the above equation where Calcium takes hydrogen with itself as it is more reactive in nature and forms a new compound of Calcium Hydroxide and Hydrogen releases.
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How did ethanol use affect the shortage of corn available to consumers during and after the drought of 2012?.
Ethanol use was effect the shortage of corn available on those time because of corn is an ingredient to produce the ethanol. Hence, ethanol use was aligned with the rarity of corn availability on those time. the more ethanol was used, the more rare corn availability for consumer.
What is the effect of the drought?The drought is a condition where the area cant provide enough water supply for a long. Agriculture sector is the most affected sector when the drought occur. The drought cause crop failure, and this condition create domino effect on another sector such as food price get more expensive, and because of food get more expensive, buying power getting low cause small business out of business.
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Decribe Niel Bohr' model of the atom. Tell what part of the atom are included in hi model and how they are arranged. (2 point)
Neil Bohr's model of an atom as a central nucleus which contain protons and neutrons with the orbits in an circular orbit at specific distances and the electrons in an atom are arranged in shells that surrounds the nucleus.
Bohr model of the atom was proposed by Neil Bohr in 1915. It came into existence with the modification of Rutherford’s model of an atom. Rutherford’s model introduced the nuclear model of an atom, in which he explained that a nucleus which is (positively charged) surrounded by the negatively charged electrons. Electrons in an atom are arranged in shells which surround the nucleus, with each successive shell being farther away from the nucleus. Subshells consist of one or more atomic orbitals and electron shells consist of one or more subshells.
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Which has the highest Zeff for its valence electrons?
F
Li
OC
Na
The highest zeff , effective nuclear charge for its valence electron from the give option is the F with the value of 5.2.
The Zeff can be calculated by the following formula :
Zeff = Z - s
where ,
Z is the atomic number
s is the shielding effect
F = 9 - (0.35 × 6 + 0.85 × 2 )
F = 5.2 for its valence electrons.
Li = 3 - 1.7
= 1.3
O = 8 - ( 2 × 0.85 + 5 × 0.35 )
= 4.5
C = 6 - (2 × 0.85 + 3 × 0.35)
= 3.25
Na = 11 - ( 2 × 1 ) + ( 8 × 0.85 )
Na = 2.20
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43. The student hopes the samples are gold, which has a density of 19.3 g/mL. A
local geologist suggest the samples might be pyrite, which is a mineral with a density
of 5.01 g/mL. What is the identity of the unknown sample?
44.Calculate the percent error of each sample. Use the density value given in question
above.
14.3-
TA
45.Was the data collected by the student accurate? Explain your answer.
Therefore, since the density of the samples are closer to the density of pyrite (5.01 g/cm³) we conclude that the samples are more like to be pyrite.
What is pyrite?pyrite, also called iron pyrite or fool’s gold, a naturally occurring iron disulfide mineral. The name comes from the Greek word pyr, “fire,” because pyrite emits sparks when struck by metal. Pyrite is called fool’s gold; to the novice its colour is deceptively similar to that of a gold nugget. Nodules of pyrite have been found in prehistoric burial mounds, which suggests their use as a means of producing fire.Wheel-lock guns, in which a spring-driven serrated wheel rotated against a piece of pyrite, were used before development of the flintlock. Pure pyrite (FeS2) contains 46.67 percent iron and 53.33 percent sulfur by weight. Its crystals display isometric symmetry. For detailed physical properties, see sulfide mineral.To learn more about sulfide mineral refer to:
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Calculate the percent yield of H2 of a reaction that produces 0.50 moles of H2 from 45 grams of HCl and excess Al (aluminum) in the reaction below (which is not balanced):
Al + HCI = AlCl2 + H2
Answer:
Balanced equation:
2 moles of Al react with 6 moles of HCl. 2 moles of AlCl₃ and 3 moles of H₂ are produced.
The answer is C.
When 50.2g of magnesium is combined with 40.8g of oxygen: 1. How many grams of magnesium oxide should be produced.
When 50.2g of magnesium is combined with 40.8g of oxygen, 91 grams of magnesium oxide should be produced.
What is law of conservation of mass?The law of conservation of mass states that the total mass of a closed system remains constant regardless of the chemical or physical changes that take place within it.
This law suggests that the amount of reactants of a chemical reaction must equate the amount of products of that reaction.
According to this question, magnesium reacts with oxygen gas to produce magnesium oxide. If 50.2g of magnesium reacts with 40.8g of oxygen, then;
50.2 + 40.8 = 91 grams of magnesium oxide will be produced.
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A ga mixture containing oxygen, nitrogen, and He ha a total preure of 189. 9 kPa. If PO2 = 104. 6 kPa and PN2 = 13. 0 kPa, what i PHe ?
The partial pressure of helium (PHe) in this gas mixture is 72.3 kPa.
To find the partial pressure of helium (PHe) in a gas mixture containing oxygen, nitrogen, and helium, you can use the equation:
Total Pressure (PT) = PO2 + PN2 + PHe
Given that the total pressure of the mixture is 189.9 kPa, and the partial pressures of oxygen and nitrogen are given as 104.6 kPa and 13.0 kPa, respectively, you can use these values to solve for PHe.
PT = PO2 + PN2 + PHe
189.9 kPa = 104.6 kPa + 13.0 kPa + PHe
Solving for PHe:
PHe = PT - PO2 - PN2
PHe = 189.9 kPa - 104.6 kPa - 13.0 kPa
PHe = 72.3 kPa
So, the partial pressure of helium (PHe) in this gas mixture is 72.3 kPa.
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Which of the physical states of water contains particles with the highest kinetic energy?A. WaterB. Melting IceC. SteamD. Ice
Option - C : Steam is the physical states of water contains particles with the highest kinetic energy. Because water in a gaseous form, has its particles moving around the most. Therefore, having the highest kinetic energy .
Kinetic energy is the energy that a moving item possesses. An item can only be accelerated through the application of a force. Applying force requires effort on our part. Following completion of the work, energy is transferred to the object, which then moves at a new, constant speed. Kinetic energy is the force that drives motion, and it may be observed in the motion of objects and subatomic particles. Every particle and moving object contains kinetic energy. Walking, a baseball flying through the air, food falling from a table, and a charged particle in an electric field are some examples of kinetic energy in action. The power is the energy , an object in motion possesses.
The word "kinetic" derives from the Greek "kinesis," which means motion.
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What is the mass in grams of 6.02 x10 23 carbon atoms?
6.02 x10^23 carbon atoms have a mass of 12.04 grams.
An element's atomic mass is the average mass of its atoms measured in atomic mass units (amu, also known as daltons, D). The atomic mass is a weighted average of all the isotopes of that element, calculated by multiplying the mass of each isotope by its abundance.
The atomic mass of carbon is 12.0107 grams/mol. Since 1 mole of carbon atoms is equal to 6.02 x 10^23 atoms, the mass of 6.02 x 10^23 atoms can be calculated by multiplying the atomic mass of carbon by 6.02 x 10^23. 12.0107 grams/mol x 6.02 x 10^23 = 12.04 grams. This is the mass of 6.02 x 10^23 carbon atoms.
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H2o has a delta. Hvap = 40. 7 kj/mol. What is the quantity of heat that is released when 27. 9 g of h2o condenses?.
Quantity of heat released = -63.1 kJ
How to calculate 27.9 g of h2o condenses?.Given:
Enthalpy of vaporization of water, ΔHvap = 40.7 kJ/mol
Mass of water, m = 27.9 g
To determine:
The amount of heat (Q) released
The reaction is: H2O(g) ↔ H2O(l)
The amount of heat evolved during condensation which involves a phase transition from vapor to liquid is given as:
Q=n*Delta H vape
n = moles of water
Since this is a condensation process: ΔHcond = -ΔHvap
Q=27.9g/18g mol * -40.7 k j/mol=63.1 k j
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Maltose is a disaccharide formed by the formation of _______ bond between glucose and ________.
Maltose is a disaccharide formed by the formation of alpha 1,4glycosidic bond between glucose and alpha D glucose unit
What are Disaccharides?
A disaccharide is a type of carbohydrate that is created by combining two units of glucose. Succrose, maltose, and lactose are the three most prevalent kinds of disaccharide. The other disaccharides are lactulose, trehalose, and cellobiose, which are less well-known. Dehydration reactions are those that occur when one water molecule is eliminated by combining two monosaccharides, resulting in the formation of a molecule of a disaccharide.
The common disaccharides are sucrose, lactose, and maltose. MaltoseTwo alpha D glucose units make up the disaccharide maltose, usually referred to as malt. An alpha 1,4 glycosidic linkage connects the two glucose units. The enzymes maltase and isomaltase break down the molecules of maltose into two glucose molecules in the human small intestine mucosa, which are then absorbed by the body. After cellulose, starch is the carbohydrate that is most prevalent in plant cells.
Formula --C12H22O11
Used extensively in the manufacturing of alcohol.Dental caries can be brought on by free maltose as well as maltose produced in the mouth as a result of starch digestion.The small intestine contains the enzymes maltase and isomaltase, which break down maltose into two glucose units that are then absorbed. Our bodies have the ability to immediately absorb maltose, which can then be broken down into a glucose unit to produce energy.The high glycemic index of maltose causes it to raise blood sugar levels.To know more about Disaccharides,Refer to:
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How many sigma bonds and pi bonds does this molecule have?
(CH3)2CCHCH2CCCOOH
The sigma bonds and pi bonds does the given molecule have is :
(CH₃)₂CCHCH₂CCCOOH , 19 sigma bond and 4 pi bond.
The given molecule given below :
(CH₃)₂CCHCH₂CCCOOH
H H H O
| | | ||
H₂ - C - C = C - C - C ≡ C - C - O - H
| |
H - C - H H
|
H
The single bond in the molecule represent the one sigma bond . the double bond in the molecule represent the one sigma bond and the one pi bond. The triple bond in the molecule represent the one sigma bond and the two pi bond.
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Thompson changed out the
metal and still consistently
observed the same cathode ray.
What did this observation mean
for atomic theory?
A. The atomic is a small hard sphere.
B. The atom is indivisible.
C. The atom contained something small and
negative.
D. The atom is mostly empty space.
Thompson's model concluded that the atom contained something small and negative. The correct option to this question is C.
What is Thompson's model?Thomson's description of the atomic model is one of many scientific models of the atom. Created by J.J. Thomson in 1904, shortly after the electron was discovered. However, the atomic nucleus had not yet been discovered at that time. So he proposed a model based on the known properties available at the time. Known properties are:
Atoms are neutrally charged
Inside an atom are negatively charged particles called electrons. According to the assumptions of Thomson's atomic model, an atom resembles a positively charged sphere with electrons (negatively charged particles) inside.
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Calculate the minimum number of grams of propane. More info for the question in attached photo.
The minimum number of grams of propane for the given question is calculated as 55.39 g.
What is propane?Propane is a three-carbon alkane with molecular formula of C₃H₈. It is a gas at a standard temperature and pressure but is compressible to a transportable liquid.
Given, mass of ice = mass of water = 4.10 kg = 4100 g
and temperature of ice = -16 °C ; Temperature of water = 75.5 °C
Heat required to change ice to water under the specified conditions is:-
As we know, q = q(-16 C to 0°C) + q(fusion) + q (0 C to 75.5 °C)
So q = m*c(ice)*ΔT(ice) + m*ΔHfusion + m*c(water)*ΔT(water)
= 4100[2.03(0-(-16)) + 334 + 4.18(75.5-0)]
q = 2796 kJ
As the enthalpy change for combustion of propane is -2220 kJ/mol
Therefore, now the number of moles of propane corresponding to required energy of 2796 kJ ;
= 1 mole * 2796 kJ/2220 kJ
= 1.259 moles of propane
As we know molar mass of propane = 44 g/mol
So, mass of propane required = 1.259 moles * 44 g/mol
Hence we get, mass of propane required = 55.39 g
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Beryllium has 2 valence
electrons. Which element could
pair with it in a 1 Be : 1 atom
ratio?
A. Li (1 valence electron)
B. P (5 valence electrons)
C. Br (7 valence electrons)
D. Se (6 valence electrons)
Beryllium with 2 valence electrons would be able to pair with Se with 6 valence electrons. Option D.
Formation of bondsAtoms form bonds with one another based on the number of valence electrons present in their outermost shell. Electrons are either donated, received, or paired.
In order for bonds to form, the participating atoms try to assume an octet structure, In other words, each atom tries to have a completely filled outermost shell. Thus, atoms with only a few electrons in their outermost shells readily donate them while those with just a few electrons remaining to fill up their outermost shell readily accept them.
Be has 2 outermost electrons, Se has 6. Be will readily donate the 2 outermost electrons while Se will readily accept 2 electrons for completely filled shell.
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How many grams of ammonia are produced when 28 grams of nitrogen gas are reacted with excess hydrogen gas?
Answer: 2.0g NH3
Explanation:
First we have to make a balanced equation (should be: N2 + 3H2 -> 2NH3) then we convert the N2 (Nitrogen gas) to moles by finding the molar mass of N2 (28.02g) divide that and multiply by the number of moles of Ammonia (NH3). This would give us 2.0g of NH3. Hope that helps!
In which type of soil where water drains too rapidly and dry out quickly?
The type of the soil where the water drains too rapidly and it dry our quickly is the sandy soil. The sandy soil has large space between the particles for passing out water through the soil.
The soil that has the large space between the particles , so that the water can pass out quickly and the soil dry out quickly. The sandy soil is has the rough texture. . The sandy soil drains out quickly as compared to the other soil. The sandy soil is very good for the plants as it has the good drainage.
Thus , the soil that drains out too rapidly and dry out quickly is the sandy soil.
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Compounds have no charge. True or False
Answer:
False.
Compounds can have a charge. A compound is a substance made up of two or more elements that are chemically bonded together. The charge on a compound depends on the number of electrons in the outermost energy level, or valence electrons, of the atoms that make up the compound. If the compound has an equal number of protons and electrons, it will have no charge, and is called a neutral compound.
However, if there is an unequal number of protons and electrons, the compound will have a charge and is called an ionic compound. For example, the compound sodium chloride, NaCl, is made up of positively charged sodium ions and negatively charged chloride ions, and therefore has an overall charge of neutral.
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Draw the structure of cyclohexane.
Explanation:
Cyclohexane ends with an -ane, which means that we have an alkane. An alkane consists of carbons and hydrogens with only single bonds. Hex means six, so there are six carbons. Cyclo means we have a ring, which is the six carbons each with two hydrogens, all single bonds.
Each carbon atom can form bonds with two hydrogens because carbon can form four bonds, which are from the two carbons and two hydrogens.
What is the percent composition by mass of aluminum in al2(so4)3 (gram formula mass = 342 grams)?.
The percent composition by mass of aluminum in al2(so4)3 (gram formula mass = 342 grams) is 15.8%.
Why is the formula of Aluminum sulphate Al2 SO4 3?Aluminum sulphate is an ionic compound, a combination of both positive and negative ions. Ions are charged atom, which may either be monatomic ions (single atoms) or polyatomic (multiple atoms combined to form a charged part). Aluminum forms a + 3 ion, Al+3, and sulphate is the -2 polyatomic ion, (SO4)-2
So there are two aluminum atoms, three sulfur atoms, and 12 oxygen atoms in a single unit of the compound Al2(SO4)3. This sums to 17. Therefore, there are 17 atoms in a single unit of the compound Al2(SO4)3. The formula for aluminum sulfate is Al2(SO4)3. Then, in a formula unit of Al2(SO4)3 there are two aluminum ions and three sulfate ions; or two aluminum, three sulfur, and twelve oxygen atoms.
Determination of percent composition of aluminum:Total amu of this compound = 342
Therefore, percent composition of Aluminum = 54/342 x100 = 15.8%
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What is the number of nitrogen molecules that reacted with excess hydrogen to make 2 x 10^10 molecules of ammonia?
Stoichiometry and the mole concept state that a reaction between 1 x 1010 molecules and extra hydrogen produced 2 x 1010 molecules of ammonia.
What does stoichiometry mean?A chemical reaction's stoichiometry involves figuring out the ratios of its constituent elements or molecules. The underlying laws of the associated relationships are the law of mass preservation and the law on combining weights & volumes.
To determine the amounts of different compounds contained in the sample, stoichiometry is employed in quantitative analysis.
The balance of chemical equations requires it.
In the example provided, since 1 molecule of nitrogen creates 2 molecules of ammonia, 2 x 1010 molecules o ammonia will be created when 2 x 10101/2=1 molecule.
As a result, 1 x 1010 molecules formed 2 x 1010 molecules of ammonia when they were combined with extra hydrogen.
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The purpose of the best-fit line on an experimental scatterplot is to Choose... The best-fit line allows us to Choose...
The best-fit line of an experimental scatterplot is used to identify any linear patterns in the scattered data.
A best fit line serves what purpose?A line of best fit is a straight line that minimizes the distance between it and certain data. The line of best fit is used to represent a connection in a scatter plot with several data points. Regression analysis' byproduct serves as a tool for predicting indicators and price fluctuations.
What is the scatter plot's best-fit line?A scatter plot's data is most accurately represented by a straight line known as the line of best fit. It is possible for this line to pass through some, all, or none of the points.
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