Answer:
a. To produce 5.0 mol of water, we need to know the number of moles of hydrogen involved in the reaction. The chemical equation 2H2(g) + O2(g) -> 2H2O(g) tells us that 2 moles of hydrogen react with 1 mole of oxygen to produce 2 moles of water. So, to produce 5.0 mol of water, we need 2.5 moles of hydrogen.
b. If we know the number of moles of hydrogen, we can calculate the number of moles of oxygen required for the reaction. The chemical equation tells us that 2 moles of hydrogen react with 1 mole of oxygen, so if we have 2.5 moles of hydrogen, we would need 1.25 moles of oxygen.
Numbering the Steps for Balancing Equations Number the steps for balancing equations: Use coefficients to increase the atoms on each side. Check to make sure you have the same number of each type of atom on each side. Count the atoms on each side. Identify the atoms on each side. Intro Done
In order to balance a chemical equation steps to be followed are : Identify atoms on each side.Count atoms on each side.Numbering steps for balancing Equations in sequential order.Use coefficients to increase atoms on each side.Check to make sure you have same number of each type of atom on each side.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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Your question is is incomplete, the complete question will be:
Numbering the Steps for Balancing Equations in a sequential order:
Use coefficients to increase the atoms on each side.
Check to make sure you have the same number of each type of atom on each side.
Count the atoms on each side.
Identify the atoms on each side.
In the control, the amplitudes of the action potentials at R1 and R2 are the same. Which of the following explains this?a. there are voltage-gated Na+ channels all along the axonb. the action potential is an all-or-none eventc. action potentials propagate or remake themselves at each point along the axond. all of these are reasonable explations
Along the whole axon, voltage-gated Na+ channels are present. It is an all-or-nothing event for the action potential. Each location along the axon sees the replication or propagation of action potentials. all of these are reasonable explanation.
What is an axon?In your brain, each neuron has a single, lengthy cable that extends from the cell's core. The place where an electrical impulse leaves a neuron's cell to be picked up by neighboring neurons is called an axon, which is a cable that is much thinner than a human hair.Information is transmitted via the axon to various neurons, muscles, and glands.The component of a nerve cell (neuron) known as the axon, also known as a nerve fiber, is responsible for carrying nerve impulses away from the cell body. Typically, a neuron contains one axon that connects it to other neurons, muscle cells, or glandular cells.Its root word, axon, which means "axle or axis," is Greek.To learn more about axon refer to:
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The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.a.Geologic columnb.Half-lifec.Absolute datingd.Absolute age
The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope is option (b) Half-life
The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope is referred to as the half-life of the isotope. This property is used in various scientific fields, including geology, archaeology, and nuclear physics.
In geology, the half-life of a radioactive isotope is used to determine the age of rocks and minerals through a method known as radiometric dating or absolute dating. By measuring the ratio of the parent isotope to the daughter isotope, scientists can calculate the age of a sample.
The geologic column refers to the layers of rocks and fossils that make up the Earth's crust, with the oldest layers at the bottom and the youngest at the top. Absolute age refers to the actual age of a rock or fossil, while absolute dating is a technique used to determine that age.
Therefore, the correct option is (b) Half-life
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in dmd, the dystrophin protein is too short. the code for making dystophin starts with which important molecule?
The code for making dystrophin starts with DNA (deoxyribonucleic acid), which is a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all living organisms.
Duchenne muscular dystrophy (DMD) is a genetic disorder caused by mutations in the dystrophin gene located on the X chromosome. The dystrophin protein plays an important role in maintaining the structure and function of muscle fibers. In individuals with DMD, the dystrophin protein is too short or absent, which leads to progressive muscle weakness and loss of function.
The process of making dystrophin starts with the genetic code that is stored in the DNA molecule. The DNA is transcribed into messenger RNA (mRNA), which carries the genetic code from the nucleus to the ribosomes in the cytoplasm of the cell. The ribosomes then use the mRNA as a template to synthesize the dystrophin protein through a process called translation.
In individuals with DMD, mutations in the dystrophin gene can cause errors in the genetic code, which can lead to a shortened or non-functional dystrophin protein. Without a fully functional dystrophin protein, muscle fibers are more susceptible to damage and degeneration, which can lead to the symptoms of DMD.
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under what conditions are gases most likely to behave ideally?
At higher temperature and lower pressure, gases most likely to behave ideally.
An ideal gas is a hypothetical gas made out of many haphazardly moving point particles that are not expose to interparticle interactions. The ideal gas idea is valuable since it complies with the best gas regulation, a worked on condition of state, and is managable to investigation under factual mechanics. The necessity of zero communication can frequently be loose if, for instance, the connection is totally flexible or viewed as point-like crashes.
Under different states of temperature and tension, many genuine gases act subjectively like an ideal gas where the gas particles (or iotas for monatomic gas) assume the part of the best particles. Many gases, for example, nitrogen, oxygen, hydrogen, noble gases, a few heavier gases like carbon dioxide and combinations like air, can be treated as ideal gases inside sensible tolerances over an extensive boundary range around standard temperature and tension.
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Burner transfers 275kj of energy to 350g of liquid water at 22°c. What mass of the water would be boiled away
68.9g mass of the water would be boiled away
What is specific heat capacity?
The amount of heat needed to raise a substance's temperature by one degree Celsius per gram is known as its specific heat. Typically, calories or joules per gram per degree Celsius are used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gram per degree Celsius.
The amount of energy necessary to raise the temperature of 1 kilogram of tissue by 1 K (=1°C) is referred to as the specific heat capacity of tissue.
Q= mcdeltT
= 350g x 418J x (100-20)c
= 117,040J
Q total = Q1+Q2
=275000J - 117040 J
= 157960 J (left in beaker)
Q = mdelt Hv
m = Q2/0h
= 157960 J / 2260J/g
= 69.8g
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A flask filled with carbon dioxide is heated from 10. °C to 40. °C. The starting pressure was 98 kPa, what is the final pressure?
Considering the Gay-Lussac's law, if a flask filled with carbon dioxide is heated from 10. °C to 40. °C and he starting pressure was 98 kPa, the final pressure is 108.39 kPa.
Definition of Gay-Lussac's lawGay-Lussac's law establishes the relationship between the temperature and the pressure of a gas when the volume is constant: If the temperature increases, the pressure will increase and if the temperature decreases, the pressure will decrease.
That is, the pressure of the gas is directly proportional to its temperature and is expressed mathematically as:
P÷T=k
where:
P is the pressure.T is the temperature.k is a constant.Analyzing an initial state 1 and a final state 2, it is fulfilled:
P₁÷T₁=P₂÷T₂
Final pressure in this caseIn this case, you know:
P₁= 98 kPaT₁= 10 C= 283 K (being O C= 273 K)P₂= ?T₂= 40 C= 313 KReplacing in Gay-Lussac's law:
98 kPa÷ 283 K=P₂÷ 313 K
Solving:
(98 kPa÷ 283 K)× 313 K=P₂
108.39 kPa= P₂
Finally, the final pressure is 108.39 kPa.
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URGENTTTT
if S contributes a charge of -4, then what is the charge of the gold in AuS2?
The charge of the gold ion in AuS₂ is +4.
How to find a charge on a compound?The charge of the gold in AuS₂ can be determined by balancing the charges of the individual components. In this case, the sulfide (S) ion has a charge of -2, and there are two sulfide ions in AuS₂, so the total charge from the sulfide ions is -4. To balance this charge, the gold ion must have a charge of +4.
Therefore, the charge of the gold ion in AuS₂ is +4. This information can be used to write the balanced chemical equation for the formation of AuS₂, which would be represented as:
Au⁺⁴ + 2S⁻² → AuS₂
This equation shows that two sulfide ions with a charge of -2 are combining with a single gold ion with a charge of +4 to form the compound AuS₂.
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Please answer asap please
Answer:
A
Explanation:
A is closest to the sun. It follows from Kepler's second law that Earth moves the fastest when it is closest to the Sun.
Each different signal in a 1H NMR spectrum represents a different__________of hydrogen atom. Hydrogen atoms that are_______________give the same signal.type;equivalentopposite;weakerupfield;lowerincrease'greater
Each different signal in a 1H NMR spectrum represents a different set of hydrogen atom. Hydrogen atoms that are equivalent give the same signal.
There are three signals in total in 1H NMR spectrum. They are 1,3-dimethylbenzene, Hb that is situated between two methyl groups, the two Hc protons are one carbon away from a methyl group, and Hd is two carbons away from a methyl group. Hence, the four aromatic protons can be divided into three sets. The two methyl groups are equivalent to each other.
Generally, there are three isotopes of hydrogen used in NMR spectroscopy, which are 1 Hydrogen, 2 Deuterium and 3 Tritium. Each isotope resonates at much different frequency for example if 1H resonates at 400 MHz then 2H resonates at 61.402 MHz.
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What volume, in liters, does 128 grams of O2 occupy at STP?
a.89.6 L
b.22.4 L
c.67.2 L
d.44.8 L
There are some important equations that we must know:
[tex]PV=nRT[/tex]
P = pressureV = volumen = molesR = Universal Gas Constant (8.31)T = temperature[tex]n=\dfrac{m}{M}[/tex]
m = massM = molar massSolving the QuestionWe're given:
molar mass of O2 = 32.00 g/molmass of O2 = 128 gT = 273 K (STP)P = 101.3 kPa (STP)First, solve for n:
[tex]n=\dfrac{m}{M}[/tex]
[tex]n=\dfrac{128}{32.00}\\\\n=4[/tex]
Now, solve using the Ideal Gas Law:
[tex]PV=nRT[/tex]
⇒ Isolate V:
[tex]V=\dfrac{nRT}{P}[/tex]
⇒ Plug in given values:
[tex]V=\dfrac{4*8.31*273}{101.3}\\\\V =89.6[/tex]
Answera. 89.6 L
This is the actual answer
Answer: it is red
Explanation: it is getting hotter
What type of change causes atoms to be rearranged?
A. a physical change
B a chemical change
C. a phase change
D. a nuclear change
What is the freezing point of a liquid?
The certain temperature at which a liquid transforms into a solid is understood as its Freezing Point. Like the melting point, the freezing point also increases when there is an upsurge in pressure.
A better accurate explanation of a freezing point is the temperature at which liquid and solid phases coexist in equilibrium. Or the freezing point of a substance may be specified as the temperature at which the vapor pressure of a solid is identical to the vapor pressure of the liquid. As we talked about freezing is the process where a substance transitions its state from liquid to solid, we comprehend that in this process a substance is changing from one state of matter into another.
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If I gain electrons I become positive negative or equal
Negative
Explanation:
electrons are negatively charged
what is the atomic mass of Fe?
The atomic mass of Fe (Iron) is 55.85 amu (Atomic mass unit).
The average mass of an element's atoms, commonly known as its atomic weight, is calculated using the average atomic mass and the relative abundance of isotopes within a naturally occurring element.
The atomic mass of such an atom serves as a measure of its size. The weight of an electron is so much lighter than that of the other particles that the mass of an atom is just that of the nucleus, despite the fact that the mass of an atom is theoretically the sum of the weights of its protons, neutrons, and electrons. The atomic mass of iron is therefore 55.85 amu.
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What are the 7 electrolytes?
The 7 electrolytes are sodium, calcium, potassium, chloride, phosphate, bicarbonates and magnesium.
Electrolytes are minerals and salts that are necessary for the body to function properly. They help regulate the body's water balance, pH, and nerve and muscle function. The seven most important electrolytes are sodium, calcium, potassium, chloride, phosphate and magnesium.
1) Sodium:
mineral mandatory necessary for regulating body fluids.
2) Calcium:
mineral element important for bone and teeth health.
3) Potassium:
mineral necessary useful for regulating heart rate and blood pressure.
4) Chloride:
electrolyte essential for regulating fluid balance in the body.
5) Phosphate:
mineral element important for energy production and cell membrane structure.
6) Magnesium:
mineral element useful for many metabolic processes in the body.
7) Bicarbonates:
are salts of carbonic acid, containing the anion [tex]HCO_{3}[/tex] - or its equivalent.
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What is recycled in ATP cycle?
A pump releases water at a rate of 10 gallons every 45 days. What is the unit rate in gallons per week? enter your answer as a mixed number in simplest form in the box.
Unit rate in gallons per week is [tex]1\frac{5}{9}[/tex] gal/week,if a pump release water at a rate of 10 gallons every 45 days.
Unit rate is the proportion of two distinct units, with denominator as 1. For instance, kilometer/hour, meter/sec, miles/hour, pay/month, and so on. Number-crunching is presumably the most fundamental and old part of math and is regularly utilized in our everyday life. This subject is about the issues in light of numerals and tasks upon numerals. We in all actuality do tackle issues of math deliberately or accidentally during our day to day everyday practice. For instance - While buying vegetables or natural products, in different dealings or in assessing pace of something and so on.
To find the rate, we can first find out how much gallons is released in 1 day, and then find out how much gallons it releases in 7 days/1 week.
For one day rate, the pump releases 10/45 gal/day.
Then we multiply the rate by 7.
So,10/45/gal/day =(10/45)×7 = 70/45gal/day = 14/9gal/day =1[tex]\frac{5}{9}[/tex] gal/day
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What are the main types of dyes?
The main types of dyes are Natural dyes, Synthetic dyes, Vat dyes, and Reactive dyes.
Dyes are dyes that are used to color items such as fabrics, paper, and food. There are several varieties of dyes, however, the following are the most common:
Natural dyes are made from natural sources such as plants, animals, and minerals.Synthetic colors are created by chemical processes and are man-made.Vat dyes: These are natural or manufactured dyes that require the addition of a reducing agent to create color. Cotton, denim, and other cellulosic fabrics are widely dyed using them.Reactive dyes are synthetic dyes that react chemically with the fibers of the colored material. They are noted for their colorfastness and brightness for dyeing natural textiles such as cotton, wool, and silk.Learn more about the dyes at
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in a dynamic equilibrium between the liquid state and the gas state, what is true about the rate of evaporation?
The rate of evaporation and condensation are equal at a state of dynamic equilibrium between the liquid and gas states.
This means that molecules of the liquid are continuously evaporating into the gas phase, while molecules of the gas are continuously condensing back into the liquid phase. At equilibrium, the number of molecules in the gas phase and the number of molecules in the liquid phase remain constant.
The rate of evaporation depends on factors such as the temperature of the liquid, the surface area of the liquid, and the strength of the intermolecular forces in the liquid. A larger surface area also increases the rate of evaporation, as more molecules are exposed to the gas phase.
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What is the Lewis structure for SO3 2?
The lewis structure of the SO₃²⁻ is as follows :
.. ..
: O : = S - : O :⁻
|
: O :⁻
°°
In the lewis structure of SO₃²⁻, the Central atom of theSO₃²⁻ion is the sulfur atom. Around the sulfur atom, there are the four bonds and the single lone pair in the lewis structure of the SO₃²⁻ion. Therefore, the five electron pair groups are around the central atom of the SO₃²⁻ion.
The total number of the valence electrons in the SO₃²⁻ is the 26 electrons. The sulfur is the less electronegative than the oxygen. Therefore the sulfur is the central atom.
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Why is EtOH the abbreviation for alcohol?
EtOH is the abbreviation for alcohol because EtOH stands for ethyl alcohol, which is the chemical name for ethanol.
Ethyl alcohol is the chemical formula for ethanol, which is the most common type of alcohol found in alcoholic beverages. The first "Et" stands for the ethyl group, which is made up of two carbon atoms and five hydrogen atoms, and the "OH" stands for the hydroxyl group, which is made up of one oxygen atom and one hydrogen atom.
Together, these two groups make up the chemical formula for ethanol, which is C₂H₅OH. Therefore, EtOH is used as an abbreviation for alcohol because it represents the chemical formula for the most common type of alcohol found in alcoholic beverages.
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What is the clf3 molecular geometry?
The molecular geometry of clf3 is trigonal bipyramidal with a T-shaped geometry due to the repulsion between lone pairs.
The sub-atomic calculation of clf3, or chlorine trifluoride, is three-sided bipyramidal. It has a focal chlorine iota that is clung to three fluorine particles and has two solitary sets of electrons. The three fluorine iotas are organized around the chlorine particle in a three-sided planar math, while the two solitary matches possess the pivotal situations above and underneath the plane. The particle has a T-molded math because of the repugnance between the solitary matches and the bond sets of electrons. Chlorine trifluoride is a profoundly responsive and poisonous gas utilized in the assembling of semiconductors and other electronic parts, as well as in rocket charges.
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What are the activities of series of metals?
The metal activity series is an empirical tool used to predict the reactivity of products in substitution reactions and metals in substitution and ore mining reactions with water and acids.
The active series of metals is a table listing metals in order of decreasing reactivity of the elements. Generally, the more reactive metal is, the metal which is more strongly reacts with other metallic elements. The faster reaction, can lose electrons with faster rate to form positive charges or positive ions. Due to containment of reactivity order it is called the reactivity series. A series of activities determines the ability to displace hydrogen ions from water and other solutions such as acidic or ionic solutions. For example, sodium metal can displace hydrogen ions out of solution, so it is considered more reactive than elemental hydrogen. It helps determine the nature of the reaction and which element displaces another element in a chemical reaction.
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If your water heater can supply 40 kbtu/h, how long will it take to heat this water?.
If my heater can supply 40Kbtu/h,then it will take one hour to heat the water.
With the increase in temperature, particles or atoms' vibrations increment. These vibrations are then moved starting with one piece of the body then onto the next. The proportion of energy with which the particles vibrate in a framework is named as intensity put away in that item.
According to the meaning of heat, it is characterized as the progression of energy from a warm to a cooler article. The heading of stream of the intensity energy takes from the substance of higher temperature to the substance of lower temperature. This is on the grounds that the atoms are vibrating quicker and move their energy to the particles vibrating more slow. The vibrational energy is additionally named as its intensity content. The heat content in the body makes it hot or cold. More prominent the intensity content, the more sizzling the body will be.
A substance might retain heat without an expansion in temperature by changing starting with one actual state then onto the next. During the time spent liquefying, the substance is changed from strong to fluid. In the sublimation cycle, the strong is changed over into a fume state. During the time spent heating up, the fluid is changed over completely to fume. Heat is a type of energy that can be changed over into work. How much energy is communicated in units of work. It is communicated in joules, foot-pounds, kilowatt-hours, or calories
This is because 1 kBtu is equivalent to 1,000 BTUs, and 40 kBtu/h is equivalent to 40,000BTU/s
Now,in 1hr =60 minutes,and in 1 minute=60sec.
So,in 1sec ,it will take =(60/40000)×40000=60minutes or 1 hr.
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What is the percent composition of water in the compound magnesium sulfate heptahydrate, MgDO4•7H2O?
A. 7.3%
B. 24.8%
C. 48.8%
D. 51.2%
How many moles are in 29.4 L of C2H6O gas at STP?
Answer: 27
Explanation: so if u divide the thingy from the thingy to a thingy u get a thingy
Select the correct answer from each drop down menu
Answer:
Atmoic weight / mass...........
draw the product of the lewis acid-base reaction. label the electrophile and nucleophile.
Lewis acid: a species with empty orbitals that accepts an electron pair (i.e., an electrophile). Lewis base: a species (also known as a nucleophile) that contributes an electron pair and has lone-pair electrons.
The end result of a Lewis acid-base reaction is what?Although we don't typically use this terminology for straightforward proton-transfer reactions like the one in the preceding example, the product of a Lewis acid-base reaction is formally referred to as a "adduct" or "complex."
Is a Lewis acid a nucleophile?Lewis bases are often referred to as nucleophiles, while Lewis's acids are sometimes referred to as electrophiles, to prevent misunderstanding between the Lewis and the Bronsted definitions of acids and bases.
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