7. Which one of the following relationships when graphed gives a straight linefor helium gas?I. V versus T at constant pressure for a constant massII. P versus n at constant volume and temperatureIII. V versus n at constant temperature and pressureIV. P versus V at constant temperature and moles of gas8. A high altitude balloon is filled with 1.41 x 10* L of helium at 21°C and 745 torr.What is the volume (L) of the balloon at 20 Km where the temperature is -48°C and63.1 torr?9. A scuba diver inhales a lung-full (350 mL) of air at a depth of 33 ft where thepressure is approximately 2.0 atm and the water temperature is 18°C. If the diverholds her breath (not a good idea!!), what volume will the same amount of air occupyat sea level where the pressure is approximately 1.0 atm and the air temperature is35°C?10. Hydrogen can be made in the by the following equation:C(s) + H20(g) → H2(g) + CO(g)If you begin with 250. L of gaseous water at 120° C and 2.0 atm pressure, how manygrams of H2 can be made? What volume of H2 is produced? What volume of H2 isproduced at STP? Gas Law Practice (IC-6)1. At what temperature will 5.00 g of Cl2 exert a pressure of 900. torr at a volume of750.mL?2. What pressure will be exerted by 25 g of CO2 at a temperature of 25 °C and a volumeof 500.mL?3. Find the number of grams of CO2 that exert a pressure of 785 torrs at a volume of32.5 L and a temperature of 32 °C4. An elemental gas has a mass of 10.3 g. If the volume is 58.4 L and the pressure is758 torrs at a temperature of 2.5°C, what is the molar mass of the gas?5. A flask of unknown volume containing a gas at 4.0 atm is attached to a 5.0 Levacuated flask. The air from the first flask is allowed to expand into the second flaskand the observed final pressure is 2.5 atm. What is the volume of the first flask (L)?6. A 300 mL sample of helium at 127°C is cooled to 150°K. What is the volume (mL) ifthe pressure is kept constant?

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At what temperature will 5.00 g of Cl2 exert a pressure of 900. torr at a volume of 750.mL?

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

100%

7. Which one of the following relationships when graphed gives a straight line
for helium gas?
I. V versus T at constant pressure for a constant mass
II. P versus n at constant volume and temperature
III. V versus n at constant temperature and pressure
IV. P versus V at constant temperature and moles of gas
8. A high altitude balloon is filled with 1.41 x 10* L of helium at 21°C and 745 torr.
What is the volume (L) of the balloon at 20 Km where the temperature is -48°C and
63.1 torr?
9. A scuba diver inhales a lung-full (350 mL) of air at a depth of 33 ft where the
pressure is approximately 2.0 atm and the water temperature is 18°C. If the diver
holds her breath (not a good idea!!), what volume will the same amount of air occupy
at sea level where the pressure is approximately 1.0 atm and the air temperature is
35°C?
10. Hydrogen can be made in the by the following equation:
C(s) + H20(g) → H2(g) + CO(g)
If you begin with 250. L of gaseous water at 120° C and 2.0 atm pressure, how many
grams of H2 can be made? What volume of H2 is produced? What volume of H2 is
produced at STP?

Gas Law Practice (IC-6)
1. At what temperature will 5.00 g of Cl2 exert a pressure of 900. torr at a volume of
750.mL?
2. What pressure will be exerted by 25 g of CO2 at a temperature of 25 °C and a volume
of 500.mL?
3. Find the number of grams of CO2 that exert a pressure of 785 torrs at a volume of
32.5 L and a temperature of 32 °C
4. An elemental gas has a mass of 10.3 g. If the volume is 58.4 L and the pressure is
758 torrs at a temperature of 2.5°C, what is the molar mass of the gas?
5. A flask of unknown volume containing a gas at 4.0 atm is attached to a 5.0 L
evacuated flask. The air from the first flask is allowed to expand into the second flask
and the observed final pressure is 2.5 atm. What is the volume of the first flask (L)?
6. A 300 mL sample of helium at 127°C is cooled to 150°K. What is the volume (mL) if
the pressure is kept constant?

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