11. A 28.02g sample of an unknown gas occupies a volume of 8.314L at 0°C and 273kPa. What is the identity of the gas? a) Nitrogen b) Fluorine c) Helium d) Oxygen 12. A mixture of hydrogen, oxygen, and nitrogen gas have a total pressure of 111kPa. If the pressure of oxygen is 100.7kPa and nitrogen is 7.2kPa, what is the partial pressure of hydrogen? a) 7.2kPa b) 10.3kPa c) 3.1kPa d) Not enough information 13. What is the density (in g/L) of water vapour at STP?

11. A 28.02g sample of an unknown gas occupies a volume of 8.314L at 0°C and 273kPa. What is the identity of the gas? a) Nitrogen b) Fluorine c) Helium d) Oxygen 12. A mixture of hydrogen, oxygen, and nitrogen gas have a total pressure of 111kPa. If the pressure of oxygen is 100.7kPa and nitrogen is 7.2kPa, what is the partial pressure of hydrogen? a) 7.2kPa b) 10.3kPa c) 3.1kPa d) Not enough information 13. What is the density (in g/L) of water vapour at STP?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

pls help asap on all asked questions.

11. A 28.02g sample of an unknown gas occupies a volume of 8.314L at 0°C and 273kPa.
What is the identity of the gas?
c) Helium
d) Oxygen
a) Nitrogen
b) Fluorine
12. A mixture of hydrogen, oxygen, and nitrogen gas have a total pressure of 111kPa. If
the pressure of oxygen is 100.7kPa and nitrogen is 7.2kPa, what is the partial
pressure of hydrogen?
a) 7.2kPa
c) 3.1kPa
b) 10.3kPa
d) Not enough information
13. What is the density (in g/L) of water vapour at STP?

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Step 4: Determining the density of water vapour at STP.

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