What does a coefficient tell you?

Answers

Answer 1

The coefficient tells you how many molecules of that substance there is.

Related Questions

Which statement best describes the law of conservation of mass? (1 point)
O Chemical symbols are used to show atom balance before and after a reaction.
O Matter cannot be created or destroyed in a chemical reaction.
O Reactants and products cannot escape from a closed system
• Reactants in a chemical reaction rearrange to form a new substance or substances.

Answers

Matter cannot be created or destroyed in a chemical reaction best describe law of conservation of mass.

What is law of conservation of mass?

The law of conservation of mass states that for any system closed Mass can neither be created not destroy. the mass of the system must remain constant over time,.

Therefore, Matter cannot be created or destroyed in a chemical reaction best describe law of conservation of mass.

Learn more about law of conservation of mass here.

https://brainly.com/question/15289631

What type of material does not allow electrons to flow easily?

Answers

neutral particles since they do not posses any charge

Given the reaction: 2Na + 2H2O --> 2NaOH + H2 How many moles of Na are needed to produce exactly 5.6 liters of H2, measured at STP?

Answers

For a reaction 2Na + 2H2O --> 2NaOH + H2, The moles of Na needed to produce exactly 5.6 liters of H2 is mathematically given as

moles of H2=0.125mole

How many moles of Na are needed to produce exactly 5.6 liters of H2,?

Generally, the equation for the Chemical Reaction is mathematically given as

2Na + 2H2O -> 2NaOH + H2(g)

Therefore, since 2Na gives 1H2

PV=nRT

Hence

n=PV/RT

n=1*5.6/0.0821 *273

n=0.249mols

In conclusion,The moles is

2Na=1H2

moles of H2=0.125mole

Answers

Answer/Explanation:

Stars spend the majority of their lifespan medling hydrogen nuclei together to form helium. When the hydrogen that in the core of the star begins to run out, the star will start using hydrogen away from its core and this is what causes the star's outer layer to expand and slowly cool down.

I hope this helps!

-No one

The solution to be tested in this experiment must be buffered to ph of 10. If the ph were considerably higher, such as 12, how would the [oh-] change

Answers

For a solution to be tested in this experiment and must be buffered to pH of 10, the [OH-] change will be, The hydroxide concentration would be higher and the formation of insoluble hydroxide salts with Mg^2 and Ca^2 would cause the determined concentration of water hardness to be too low.

What would be the [OH-] change?

Generally, the equation for the Total hardness is mathematically given as

[tex]T=\frac{A*D*1000}{B}[/tex]

Where

[tex]D=\frac{molarity}{0.01}[/tex]

D=0.02/0.01=2

Therefore

[tex]T=\frac{A*D*1000}{B}\\\\T=\frac{20.4*2*1000}{25}[/tex]

T=1632ppm

in conclusion, The hydroxide concentration would be higher .

Answers

The molar mass of the gas that has a mass of 3.82 g and occupies a volume of 0.854 L is 106.66g/mol.

How to calculate molar mass?

The molar mass of a substance can be calculated by dividing the mass of the substance by its number of moles.

However, the number of moles of the gas in this question needs to be calculated first using the ideal gas law equation:

PV = nRT

Where;

P = pressureV = volumen = number of molesT = temperatureR = gas law constant

1.04 × 0.854 = n × 0.0821 × 302

0.888 = 24.79n

n = 0.888/24.79

n = 0.036mol

Molar mass of gas = 3.82g/0.036mol

Molar mass = 106.66g/mol

Therefore, the molar mass of the gas that has a mass of 3.82 g and occupies a volume of 0.854 L is 106.66g/mol.

Learn more about molar mass at: https://brainly.com/question/12127540

During an experiment, ice and water were placed in a perfectly insulated thermos flask at 0 °C. Describe this system when it phase reaches equilibrium. (8 points)

Answers

Answer :By the time thermal equilibrium is attained in the system, ice is completely converted to water.

What is tehrmal equilibrium?

Thermal equilibrium is a situation in which two substances are exactly at the same temperature. That is. Heat is no longer flowing beween the bodies.

Recall that an insulated thermos flask implies that heat does not eneter or leave the system. Heat will flow from the water to the ice untill the both attains the same temperature and the ice is completely converted to water.

Have a good day

A quantity of helium gas occupies 5 liters at room temperature and standard atmospheric
pressure (760 mm Hg). If the temperature stays the same, what will be the volume o
the helium if the pressure is increased to 950 mm of mercury?

Answers

The new volume of occupied by helium gas when its pressure is increased from 760 mm Hg to 950 mm Hg at an initial volume of 5 L is equal to 4 L.

Boyle's Law

Boyle's law state that at constant temperature, the volume of a fixed mass of gas is directly proportional to its pressure.

To calculate the volume of the helium gas, we use the formula below.

Formula:

P₁V₁ = P₂V₂............. Equation 1

Where:

P₁ = Initial pressureV₁ = Initial volumeP₂ = Final pressureV₂ = Final volume.

Make V₂ The subject of the equation

V₂ = P₁V₁/P₂............... Equation 2

From the question,

Given:

P₁ = 760 mm HgV₁ = 5 LP₂ = 950 mm Hg

Substitute these values into equation 2

V₂ = (760×5)/950V₂ = 4 L.

Hence, The new volume of occupied by helium gas when its pressure is increased from 760 mm Hg to 950 mm Hg at an initial volume of 5 L is equal to 4 L.

Learn more about Boyle's law here: https://brainly.com/question/26040104

What are the key control points within the citric acid cycle?

Answers

The citrate synthase, isocitrate dehydrogenase, and the α-ketoglutarate dehydrogenase complex are the three key control points.

What are the key control points within the citric acid cycle?

The key control points in citric acid cycle are the reactions catalyzed by citrate synthase, isocitrate dehydrogenase, and the α-ketoglutarate dehydrogenase complex.

So we can conclude that citrate synthase, isocitrate dehydrogenase, and the α-ketoglutarate dehydrogenase complex are the three key control points.

Learn more about cycle here: https://brainly.com/question/8283140

The citric acid cycle is a chemical cycle that releases stored energy. Citrate synthase, isocitrate dehydrogenase, and alpha-ketoglutarate dehydrogenase are the control point of the cycle.

What is a citric acid cycle?

The citric acid cycle or the TCA cycle (tricarboxylic acid cycle) is the chemical series of reactions that releases energy from food sources like fats, carbohydrates, and proteins.

The TCA cycle includes enzymes and many substances that regulate it but three major points are Citrate synthase, isocitrate dehydrogenase, and alpha-ketoglutarate dehydrogenase.

Therefore, they get inhibited, regulated, and limit the rate of the reaction.

Learn more about the citric acid cycle here:

https://brainly.com/question/26362996

#SPJ4

I have my last 3 electrons on the third energy level.

Answers

Answer:

an energy level represents the three dimensional space surrounding nucleus where electrons are most likely to be.

Explanation:

"Ozone Depletion."
Spray bottles, air conditioners, and
refrigerators used to contain CFCs
and halogens. These chemicals
destroyed ozone and broke apart the
ozone layer. They made two large
holes at the North and South Poles.
However, most of these chemicals
are now not allowed.
What is the MOST accurate summary of this
paragraph?

Answers

Answer:

CFCs and halogens coming from spray bottles and other human satisfaction sustaining devices cause global warming, which will cause sea levels to rise. Because of this, several countries have banned these chemicals because of anticipation of a rise of sea levels and several important countries to be sunken.

The picture above shows a frying pan. Why are frying pans usually made out of metal?

Answers

Answer: The frying pan is made up of metals like aluminium or stainless steel as these metals are good conductor of heat.

Answer:

b. they are good conductors of heat

Explanation:

study island

What is density? (1 point) the amount of space occupied by a substance or body O the quantity of matter contained in a substance or body o the amount of heat contained in a body o the degree of compactness of a substance

Answers

Answer:

density answer IS ....

A chemist wants to make a solution using a crystalline solid and water. Which action would speed up the solution-making process?

A
Heat the water while adding the crystalline solid.

B
Slowly cool the water while adding the crystalline solid.

C
Divide the water into smaller batches, adding a little of the solid to each.

Answers

The action that would speed up the solution making process is : ( A ) Heat the water while adding the crystalline solid

Ways to increase solution making process

When preparing a solution or trying to dissolve a crystalline solid in water there are three ways which can be used to speed up the solution making process or dissolving the solid faster. and they are

Increase in temperature of water Divide the solid into smaller particles before adding them Increasing the stirring rate

From the options listed above the best action is to heat the water while adding the crystalline solid.

Hence we can conclude that The action that would speed up the solution making process is : ( A ) Heat the water while adding the crystalline solid.

Learn more about solution making : https://brainly.com/question/25326161

Answer: A

Explanation: heat the water

What does an electromagnetic spectrum refer to?

Answers

the entire distribution of electromagnetic radiation according to frequency or wavelength

Determine the product(s) formed when cyclohexene is treated with the following reagents

Answers

Explanation:

Big C carbon surrounded by He helium

Hello people ~
Friction always
(a) opposes the motion
(b) helps the motion
(c) both (a) and (b)
(d) none of these

Answers

Answer:

Opposes the motion

Explanation:

Let's take an example

Suppose you kicked a ball and the ball is doing down the groundThe friction makes the ball to stop after sometime .So it opposed the ball's motion

option A is correct

A solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved

Answers

Answer:

are you to measures how much solute dissolved with the water or trying to measure how much more water you need the solute to dissolve in ?

The solute is a component of the solution that is added to a solvent to make a solution. when equilibrium is attained then the solution will be saturated.

What is a saturated solution?

A saturated solution is a solution that contains the maximum amount of dissolved solute particles in it and cannot further dissolve solutes added additionally.

When the solute is added and does not get dissolved then the equilibrium between dissolved and undissolved is reached and the solution becomes saturated.

Therefore, the solution is saturated.

Learn more about the saturated solution here:

https://brainly.com/question/1321288

#SPJ4

In which situation might a forensic scientist decide to collect fiber evidence from a crime scene?

if collection with a paper bag or sheet of paper isn’t feasible

if there’s a risk of the evidence getting lost if it is transferred on other objects

if there’s a likelihood that fiber evidence exists at the scene of a crime

if there are multiple crime scenes with fiber items that need to be transported

Answers

Answer: C

Explanation:

C just because the other choices dont really make sense. They use these fibers as a way to see what clothes, shoe strings, carpets, etc was there it help identify a person at the scene. Hope this helps!!

If a buffer is composed of 33. 80 ml of 0. 164 m acetic acid and 31. 63 ml of 0. 189 m sodium acetate, how many ml of 0. 100 m hcl can be added before the buffer capacity is reached?

Answers

For a buffer is composed of 33. 80 ml of 0. 164 m acetic acid and 31. 63 ml of 0. 189 m sodium acetate,The volume of HCl is mathematically given as

v1=70.1148mL

What volume of HCL can be added before the buffer capacity is reached?

Generally, the equation for the Chemical reaction is mathematically given as

HCl+CH3Coo-Na---->CH3CooH+NaCl

Therefore

Mole of HCl=34.37*0.204*10^-3

Mole of HCl=7.011*10^-{-3}

In conclusion

M1v1=m2v2

Therefore

[tex]v1=\frac{m2v2}{m1}\\\\v1=\frac{7.011*10^-{-3}}{0.1}[/tex]

v1=70.1148mL

Answers

The intermolecular forces present in B will be much stronger than the intermolecular forces present in A.

What are intermolecular forces?

The term intermolecular forces has to do with the forces that hold molecules of a substance together in a particular state of matter. Now, we can see that B must contain dipole - dipole interaction while A has none of these.

It then follows that the intermolecular forces present in B will be much stronger than the intermolecular forces present in A.

Learn more about intermolecular forces: https://brainly.com/question/9007693

The main purpose of homeostasis is to

A. fight disease-causing organisms.

B. keep internal conditions stable.

C. produce offspring.

D. replicate DNA.

Answers

b. keep internal conditions stable

B. Keep the internal conditions stable.

hello people ~
Identify the type of plastic that can best be used to make electrical switches.

A. PVC

B. Polythene

C. PET

D. Bakelite

Answers

Answer:

Bakelite

Explanation:

Bakelite is a non recyclable plasticSimilar to Melamine it has some of very bad heat and electricity conducter.So it's used in electrical switches

The chemical equation below shows the photosynthesis reaction. 6co2 6h2o right arrow. c6h12o6 6o2 the molar mass of carbon dioxide (co2) is 44.01 g/mol. the molar mass of water (h2o) is 18.02 g/mol. a reaction uses 528 g of co2. how many moles of water are used in this reaction? 12.0 moles 72.0 moles 216 moles 528 moles

Answers

The moles of water are used in the given reaction between CO₂ & H₂O is 12 moles.

How do we calculate mass from moles?

Mass of any substance will be calculated by using their moles as:

n = W/M , where

W = given or required mass

M = molar mass

Given chemical reaction is:

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

Moles of 528 g of CO₂ = 528g / 44.01g/mol = 11.99 moles

From the stoichiometry of the reaction, it is clear that:

6 moles of CO₂ = reacts with 6 moles of H₂O

So, 11.99 moles of CO₂ = reacts with 11.99 = 12 moles of H₂O

Hence option (a)is correct i.e. 12 moles.

To know more about moles, visit the below link:

https://brainly.com/question/15373263

Answer:

Explanation:

Which of the following shows the proper configuration for the straight chain isomer of butane?

Answers

Answer:

option C is the correct answer

Explanation:

it belongs to alkanes series

for alkane series the formula is

C n H 2n+2

so the formula of b utane is

C 4 H 10

The correct answer is option C.C4H10

What is straight chain isomerism?

These isomers occur because they can branch off at the carbon chain. For example, butane has two isomers, C4H10. One of them has a "linear" carbon atom and the other has a branched chain.

Butane is a 4-carbon alkane, so its molecular formula is C4H10. There are two isomers. n-Butane and isobutane. Here, n-butane is a linear compound with four carbon atoms connected by a single covalent bond.

\Compounds with the same molecular formula but different arrangements of carbon atoms in the straight or branched chain are called chain isomers. n-Butane and isobutane are chain isomers because they have different carbon atom arrangements

Learn more about isomerism here: https://brainly.com/question/18474884

#SPJ2.

2) Usually, when the particle size is decreased, what will happen to the rate of dissoving?
A) It will stop.
B) It will increase.
C) It will decrease.
D) It will remain constant.

Answers

B) It will increase.

The rate of dissolving is usually affected due to the change of size, temperature of the stirring of the solution.

As the size is decreased it also means that the particles are smaller therefore it will be easier to dissolve. So as a result the rate of dissolving increases

How would you describe the temperature of an object that has very slow moving particles?

Answers

The temperature of an object would be very cold or solid.

Ice is an example of solid cold object that has very slow moving particles.

Limestone and lime are used in the treatment of acidic soils. what are the advantages and disadvantages of using limestone or lime in the treatment of acidic soil or water bodies?

I WILL GIVE BRAINLIEST!!!

Answers

Answer:

This study is an overview of previous studies on lime (quick and hydrated) -treated soil. Lime is the oldest traditional stabilizer used for soil stabilization. The mechanism of soil-lime treatment involves cation exchange, which leads to the flocculation and agglomeration of soil particles. The high pH environment then causes a pozzolanic reaction between the free Ca+2 cations and the dissolved silica and alumina. Lime-treated soil effectively increases the strength, durability and workability of the soil. Such treatment also improves soil compressibility. A fluctuation behavior was observed on the influence of lime on soil permeability. However, the factors affecting the permeability of the soil-lime mixture should be extensively studied. Nonetheless, lime treatment has a number of inherent disadvantages, such as carbonation, sulfate attack and environment impact. Magnesium oxide/hydroxide are thus proposed as a suitable alternative stabilizer to overcome at least some of the disadvantages of using lime in soil stabilization.

Explanation:

Actually I have a pdf on it to explain more if you want but how to get it to you is the issue. well I'm guessing the one I've put out should be very much okay, I hope so .

Between which atoms do hydrogen bonds form in water?
A) Oxygen and hydrogen atoms in the same water molecule
B) Oxygen and hydrogen atoms in different water molecules
C) Hydrogen atoms in the same water molecule
D) Oxygen atoms of different water molecules

Answers

Answer:

right answer is A bcz

Explanation:

In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.

Answer:

oxygen and hydrogen indifferent molecules

What two countries have nearly 50% of global coal reserves? a. united states and canada b. united states and russia c. brazil and russia d. brazil and canada please select the best answer from the choices provided a b c d

Answers

Answer:

Explanation:

The two countries that have nearly 50% of global coal reserves are

United States and Russia

Option B is correct

What is the global coal reserves?

Estimates of total world proved recoverable coal reserves as were around 1,156 billion short tons, with five countries accounting for roughly 75% of the world's proven coal reserves.

In conclusion, The USA coal reserves amounted to nearly 248.9 billion metric tons in 2020