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A gas occupies 2.2L at 425 kPa. Determine its volume at standard pressure. The temperature does not change.

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Presentation on theme: "A gas occupies 2.2L at 425 kPa. Determine its volume at standard pressure. The temperature does not change."— Presentation transcript:

1 A gas occupies 2.2L at 425 kPa. Determine its volume at standard pressure. The temperature does not change.

2 9.2 L

3 At room temperature (21°C), the pressure of carbon dioxide in an unopened soda can is 207kPa. Find the pressure of the carbon dioxide in the soda can if left in the trunk of a car on a hot summer day (72°).

4 242 kPa

5 A gas occupies 15.7L at 28°C and 658mmHg. At what temperature will it expand to 20.5L at a pressure of 595mmHg?

6 355K

7 Find the volume occupied by 12.2g of argon gas at 23°C and 115kPa.

8 6.54L

9 At what temperature will 5.0g of chlorine fill a 950mL flask at 125kPa?

10 202K

11 What mass of hydrogen gas was collected in a eudiometer if the volume was 35.2mL, the temperature was 23°C and the pressure of the dry hydrogen was 94.2kPa?

12 g

13 A student blows up a balloon to a volume of 23.1L at 21.4°C. He then places the balloon in an ice water bath, where the temperature is 2.5°C. Find the new volume of the balloon.

14 21.6L

15 A gas occupies 14.5L at 28°C and 450mmHg. Determine its volume at STP.

16 7.8L

17 A student collects hydrogen over water at 23°C. The pressure in the room is 99.2kPa. The water vapor pressure at 23°C is 2.8kPa. Find the pressure of the dry hydrogen gas.

18 96.4 kPa

19 Which gas below would effuse at the fastest rate: – A. Hydrogen – B. Argon – C. Helium – D. Carbon monoxide

20 A. hydrogen

21 A sample of hydrogen and a sample of helium are both in 2.0L tanks at 24°C and 795mmHg. Which tank has more molecules?

22 They have the same number of molecules!

23 A sample of hydrogen and a sample of helium are both in 2.0L tanks at 24°C and 795mmHg. Which tank has is heavier?

24 helium

25 A sample of hydrogen and a sample of helium are both in 2.0L tanks at 24°C and 795mmHg. Which gas has the higher average kinetic energy?

26 They have the same average kinetic energy

27 Find the density of nitrogen dioxide at STP.

28 2.05 g/L

29 Find the density of nitrogen dioxide at 25°C and 96kPa.

30 1.8 g/L

31 Find the molar mass of a gas if 12.2g of a gas occupies 2.44L at 94kPa and 24°C. The gas is a monoatomic element. Identify the gas.

32 131.3 g/mol Xe


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