1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brilliant_brown [7]
2 years ago
15

A gaseous product of a reaction is collected at 280K and 0.95 atm. Given R=0.0821L⋅atmmol⋅K, what is the molar mass of the gas,

in grams per mole, if 5.49 g of gas occupies 4.92 L?
A. 0.04 g/mol

B. 133 g/mol

C. 24 g/mol

D. 27 g/mol
Chemistry
2 answers:
exis [7]2 years ago
8 0

Answer:

I took the test, see below

Explanation:

1. The volume increases to twice its original value.

2. volume & temperature are directly proportional

volume & pressure are inversely proportional

pressure & temperature are directly proportional

3. Gay-Lussac’s law, by seeing how changes in temperature affect the pressure of the gas

4.V1P1/T1=V2P2/T2

5. It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume.

6. keeping the pressure constant and increasing the temperature

7. When temperature is held constant and volume increases, the pressure increases.

8. pressure, volume, temperature, number of moles

9. volume

10. 7.10 L/mol

11. 0.105 mol

12. 27 g/mol

13. the temperature increasing by a factor of 2

The rest are short answers, just give those your best shot.

White raven [17]2 years ago
6 0

The molar mass of the gas in grams per mole is 27 g/mol

The correct answer to the question is Option D. 27 g/mol

To solve this question, we'll begin by calculating the number of mole of the gas. This can be obtained as follow:

Temperature (T) = 280 K

Pressure (P) = 0.95 atm

Volume (V) = 4.92 L

Gas constant (R) = 0.0821 L⋅atm/mol⋅K

<h3>Number of mole (n) =? </h3>

<h3>PV = nRT </h3>

0.95 × 4.92 = n × 0.0821 × 280

4.674 = n × 22.988

Divide both side by 22.988

n = 4.674 / 22.988

<h3>n = 0.203 mole </h3>

Thus, the number of mole of the gas is 0.203 mole.

Finally, we shall determine the molar mass of the gas. This can be obtained as follow:

Number of mole of gas = 0.203 mole.

Mass of gas = 5.49 g

<h3>Molar mass =? </h3>

Mole = mass / molar mass

0.203 = 5.49 / molar mass

Cross multiply

0.203 × molar mass = 5.49

Divide both side by 0.203

Molar mass = 5.49 / 0.203

<h3>Molar mass = 27 g/mol </h3>

Therefore, the molar mass of the gas is 27 g/mol

Option D. 27 g/mol gives the correct answer to the question.

Learn more:

brainly.com/question/10542057

You might be interested in
How do the properties of a compound like h2o or nacl illustrate the concept of emergent properties?
Softa [21]

Answer and explanation;

Na - metal

Cl - poisonous gas

NaCl - cyrstaline solid that is edible

An emergent property is a property which a collection or complex system has, but which the individual members do not.  

Water emergent properties: cohesion & adhesion, versatile solvent, temperature moderation, freezing.

The properties of a compound can be very different from the properties of the elements that make them, for example, Sodium is an explosive metal, and  Chlorine is a toxic gas, however, sodium chloride is a Delicious table salt!

4 0
2 years ago
Bobby found that water has a high boiling point and concluded this was because water intermolecular forces. Based on the data, i
Art [367]

Yes, Bobby is correct

Explanation:

Anomalously high boiling point of water is as a result of the intermolecular forces between the molecules of water.

The intermolecular forces found in water are the very strong hydrogen bonds.  The bulk of the physical properties of matter are due to the intermolecular forces that they possess.

  • Hydrogen bonds are stronger than van der waals forces and they are more effective in binding molecules together into larger units.
  • Substances whose molecules join via hydrogen bonds have higher boiling points i.e lower volatility than those with van der waals forces.
  • Hydrogen bond is actually an electrostatic attraction between hydrogen atom of none molecule and the electronegative atom(O or N or F) of a neighboring molecule.

Learn more:

Hydrogen bonds brainly.com/question/10602513

#learnwithBrainly

5 0
3 years ago
What is Minimum Threshold Frequency?​
hoa [83]

the minimum frequency of radiation that will produce a photoelectric effect

<h2>#CarryOnLearning</h2>

7 0
2 years ago
Read 2 more answers
To draw the Lewis structure of the polyatomic ion,CIO3 you would have to _____ those in the structures of Cl, O, O, and O. Selec
NikAS [45]
D. Add one electron to, 
3 0
3 years ago
BRAINLIEST WILL BE GIVEN!! FAST PLEASE!
WARRIOR [948]

Answer:

1) THE AGE OF THE SAMPLE 2) URANIUM- LEAD DATING

Explanation:

3 0
3 years ago
Other questions:
  • What does Avogadro's number represent?
    12·2 answers
  • Which member of the following pairs has the larger London dispersion forces?
    13·1 answer
  • 4. I am named after the united states since I was discovered here. What is my name and how many protons do I have?
    15·1 answer
  • Where is most of the high-level waste from nuclear reactors stored?
    10·2 answers
  • What is technology?
    11·2 answers
  • The Sun is a yellow star that's both average in brightness and temperature and is classified as
    10·1 answer
  • How would you prepare a 1 L solution of 3 M MgO?
    9·1 answer
  • Are pressure and temperature directly proportional?
    15·1 answer
  • When salt is mixed in water, what is the salt and water? A)salt is the solution, water is the solute. B)salt is the solvent, wat
    10·1 answer
  • How can mechanical waves help in the treatment of cancer?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!