what volume will 28.0 g of O2 occupy at STP?

Answers

Answer 1

Considering the definition of STP conditions, 28 grams of O₂ will ocupy at STP 19.6 L.

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

On the other side, the molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

In this case, you  have 28 g of O₂. The molar mass es 32 [tex]\frac{g}{mole}[/tex]

Next, you can apply the following rule of three: if 32 grams of the compound are contained in 1 mole, 28 grams are contained in how many moles?

[tex]number of moles=\frac{28 gramsx1 mole}{32 grams}[/tex]

number of moles= 0.875 moles

Now, you can apply the following rule of three: if by definition of STP conditions 1 mole of O₂ occupies a volume of 22.4 liters, 0.875 moles occupies how much volume?

[tex]volume=\frac{0.875 molesx22.4 L}{1 mole}[/tex]

volume= 19.6 L

Finally, 28 grams of O₂ will ocupy at STP 19.6 L.

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Related Questions

One of the following is not a property of metals
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Answer:

option b

Explanation:

high compressibility is not a property of metal.

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We would need a picture to help you out with this.

Explanation:

which characteristic of bones is often very different from one individual to another?


a. the number of bones

b. the cellular make up of the bones

c. the size of the bones

d. the composition of the bones

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D is the correct answer

What role do insects play in the fertilization process?[Bees]
AThey transport seeds from trees to the groundincorrect answer
BThey collect nectar from the interior parts of plantsincorrect answer
CThey deliver pollen from the stamens of plants to the ovaries of other plantsincorrect answer
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Answer:

C. They deliver pollen from the stamens of plants to the ovaries of other plants

Explanation:

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Which procedure would produce the best data for comparing the electrostatic forces between the molecules of different substances?
Heat each substance in liquid form for the same amount of time. Measure the temperature of each substance.
Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.
Heat each substance in solid form to its melting point. Measure the quantity of each substance that has melted.
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Answers

The best data for comparing the electrostatic forces between the molecules of different substances can be obtained through this procedure: B. Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.

An electrostatic force can be defined as a force of attraction or repulsion between two (2) stationary and electrically charged particles of a substance.

Basically, the force between two (2) charges is inversely proportional to the square of the distance between them and directly proportional to the magnitude of their charges.

In the molecule of a substance, an electrostatic force is mainly responsible for holding its atoms together while giving the molecule both structure and strength.

During an experiment that is aimed at obtaining the best data to compare the electrostatic forces between the molecules of different substances, the procedure that should be adopted include:

Each of the substance should be heated in liquid form to its boiling point.The boiling temperature of each substance should be measured and recorded.From the data, a comparison should be done to know which molecule contain atoms that are tightly held together.

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Answer:

B. Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.

Explanation:

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Find the pOH for the following:

A 1.34 x 10^-4 M solution of hydrochloric acid.

A) 10.13

B) 3.87

C) 4

D) 10

Answers

Answer:

A) 10.13 is the answer

Explanation:

Since HCl is a strong acid, its pH can be found by simply plugging it into the equation:

pH = -log[H+]

*H+ is just the concentration you were given*

Now that you have the pH, you just subtract it from 14 to find the pOH

I have attatched my work below. Hope this helps! :^)

To find the pOH of a solution, you can use the formula: pOH = -log10[OH-]

What is pOH?

pOH is a measure of the concentration of hydroxide ions (OH-) in a solution. It is the negative logarithm (base 10) of the hydroxide ion concentration.

In this case, since we have hydrochloric acid (HCl), we need to consider the concentration of hydroxide ions (OH-) produced when HCl dissociates in water.

HCl is a strong acid and completely dissociates, meaning it produces an equal concentration of hydrogen ions (H+) and chloride ions (Cl-) in water. Since there are no hydroxide ions produced, the concentration of hydroxide ions is 0.

Therefore, the pOH of a hydrochloric acid solution is 0, and none of the options provided (A, B, C, D) is the correct answer.

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D. Hydrogen-3 has two neutrons.
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Answer:

C hydrogen 3 has 0one more electron than hydrogen 2

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Answer:

The atmosphere is the superhighway in the sky that moves water everywhere over the Earth. Water at the Earth's surface evaporates into water vapor which rises up into the sky to become part of a cloud which will float off with the winds, eventually releasing water back to Earth as precipitation.

Explanation:

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Answers

Answer:

left

Explanation:

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why do we adjust coefficients when balancing chemical equations and not subscripts?

Answers

Answer:

By changing the coefficients you change the amount you have of certain compounds in the equation, whereas changing the subscript would change what compounds are actually in the equation because it would change the ratio of how many atoms of each element are in a compound.

For Example:

Outside of Balancing Equations, [tex]NO_{2}[/tex] (Nitrite) and [tex]NO_{3}[/tex] (Nitrate) are different because one forms a strong acid while the other forms a weak acid based on how many oxygen atoms are added to the compound. So in a chemical equation, if you change the subscripts, you change the entire compound so your reaction may be with a weak acid instead of a strong acid and give you a different product. Meanwhile, changing the coefficient changes the amount of the compound you have for the reaction in order to maintain the Conservation of Mass Law.

Will this reaction occur?
Ni (s) + H,O(1)
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Yes

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Answers

No
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Answers

Answer:

c.) feeling the heat from a lightbulb with your hand when touching the bulb

Explanation:

In heat transfer by conduction, feeling the heat from a lightbulb with your hand when touching the bulb will be categorised as the best condition.

c.) feeling the heat from a lightbulb with your hand when touching the bulb

It is C because it is the direct transfer of heat from the lightbulb to your hand

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The sun!! It’s the sun lovely! Don’t worry!

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Answers

I'd schedule the picnic a bit earlier than originally planed. I'd do this because everyone can be home by the time the rain starts.

If you don't want to do that do /weather clear and no more rain.

b) Explain how a burette and a conical flask should be rinsed before a titration experiment?​

Answers

[tex] \large \text{Answer} \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]

If you rinse the burette with the solution to be used, then any tiny amounts of liquid remaining are the same as the solution used to fill the burette, so they will not change the concentration of the solution in any way. This is to prevent contamination.

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The line "Come, I will make the continent indissoluble" from "For You O Democracy" implies democracy will make the nation stronger than ever before. Given this, what is most likely the meaning of indissoluble?.

Answers

Answer:

Permanent

Explanation:

I took the text

for a molecule to exhibit hydrogen bonding the h must be covalently bonded to a?

Answers

Answer:

: fluorine, oxygen, or nitrogen.

Explanation:

Hydrogen bonding occurs only in molecules where hydrogen is covalently bonded to one of three elements: fluorine, oxygen, or nitrogen.

Hydrogen bonding occurs only in molecules where hydrogen is covalently bonded to one of three elements: fluorine, oxygen, or nitrogen. These three elements are so electronegative that they withdraw the majority of the electron density in the covalent bond with hydrogen, leaving the H atom very electron-deficient. The H atom nearly acts as a bare proton, leaving it very attracted to lone pair electrons on a nearby atom.

Which two statements are true for both compounds and mixtures?
A. They are made up of more than one type of atom.
B. Their particles all have the same chemical formula.
C. They can be separated into two or more elements.
D. Their particles are held together by chemical bonds.

Answers

Answer:

B and C

Explanation:

A. Their particles are held together by chemical bonds.

This option is incorrect for both compounds and mixtures. It is only true for Compounds.

B. They are made up of more than one type of atom.

This is correct. Both compounds and mixtures consists of different atoms of elements.

C. They can be separated into two or more elements.

This option is correct. Compounds are broken down into elements through chemical means.

D. Their particles all have the same chemical formula.

This is wrong. Mixtures do not have a chemical formula

please help I attached an image

Answers

Answer:

B

Explanation:

Nonmetals have nearly full valence shells and try very hard to get that last few electrons to complete their valence shell. This allows them to achieve noble gas stability. This is why they have high electronegativities and electron affinities.

How much heat is required to change 235 g of iodine at 25 degrees celsius into vapor at 198 degrees celsius? The melting point is 113.5 degrees celsius and the boiling point is 185.4 degrees celsius.​

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Answer:

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how many moles are in 2.5g of n2

Answers

Answer:

0.089

Explanation:

n= m/M = 2.5/14 = 5/28 mol

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Explain how food is transformed to energy for our bodies. ​

Answers

When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.
Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP. Hope it helps

What is true about the light shown above?

A. All of the light is refracted

B. All of the light is reflected

C. Some of the light is refracted, and some of the light is reflected

D. None of the light is refracted or reflected

Answers

Answer:

The answer is D. None of the light is refracted or reflected.

Explanation:

Just trust :)

How can air pollution affect plants
A. Air pollution can block sun light from reaching plants
B. Air pollution can affect the water plants need.
C. Air pollution absorbs carbon dioxide.
D. Air pollution can change normal temperatures of a region. ​

Answers

Answer:

A

Explanation:

B) pollution doesn't affect water

C) Air pollution makes carbon dioxide

D) air pollution does not affect temperature

In an ionic compound, the total positive charge of all the positive ions ____ the total negative charge of all the negative ions.

Answers

Answer:

I think it would be 0 since cations and anions must always combine in such a way so that their charges cancel.

An element has 3 electrons, 3 protons and 4 neutrons. What will be its atomic number and mass number? (​

Answers

Answer:

its atomic number will be 3 and it's mass number will be 7. it is lithium

chemistry A Gases unit test

Answers

Answer:

gas is composed to particles and has a mass.

how does the solubility of oxygen in water affect the value of r you determined?

Answers

Answer:

R, the gas law constant, is a constant,

Solubility of gas is inversely proportional to temperature.

Solubility of gas ∝ 1/Temperature

That means as temperature increases the solubility gas goes on decreasing and vice versa.

But R is inversely proportional to temperature .

So Solubility ∝ R. (1/T ∝ R)

That means solubility of gas goes on increasing as R increases.

Step 2: Result

Result:

So from above conclusion the solubility of Oxygen in water increases that result into increasing R value.

Explanation:

Question 2 (5 points)
(04.01 LC)
Look at the chemical equation:
2H2S + 302 - 2H2O + 2502
How many atoms of hydrogen (H) are present on both sides of the equation? (5 points)
a
2.
Ob
3
Ос
4
Od 6

Answers

Answer:

4 atoms

Explanation:

I hope it helps you!

during an earthquake, geologists use a machine called what

Answers

Answer:

sesimographs

Explanation:

Answer:

A seismometer

Explanation:

it measures seismic waves

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