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Exam 6: Gases

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Question 51

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Pascal (Pa) is equal to 1 N/m².

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Question 52

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A gas has an initial volume of 65.08 mL and an initial temperature of 577°C. What is its new volume if temperature is changed to 417°C? Assume pressure and amount of gas are held constant.

A) 56.2 mL
B) 47.0 mL
C) 80.2 mL
D) 90.1 mL
E) 52.8 mL

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Question 53

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Which of the following statements is true about the ideal gas law?

CO₂ generated by the decomposition of ZnCO₃, is collected in a 5.6 L container over water. If the temperature is 40.0°C and the total pressure inside the container is 580 torr, how many moles of CO₂ were generated?

When applying Charles's law, amount of gas and volume are considered to be constants.

What is the final pressure of a gas whose initial pressure is 590 torr, initial temperature is 308 K, and final temperature is 286 K? Assume volume and amount of gas are held constant.

The _____ theory of gases is a fundamental model that describes the physical properties of gases.

According to Gay-Lussac's law, at constant V and n.

What is mole fraction?

One torr is an equivalent unit of one millimeter of mercury, the amount of pressure exerted by a column of mercury exactly 1 mm high.

An ideal gas is a gas that exactly follows the statements of the kinetic theory.

What are the postulates of the kinetic theory of gases?

_____ is defined as exactly 100 kPa of pressure (0.986 atm) and 273 K (0°C).

A 6.00 mol sample of O₂ has a pressure of 0.80 atm and a temperature of 68°C. Its volume is 41.8L.