QuestionQuestion

1) Express 728 mm Hg in units of atm. Enter your answer in the provided box. [ ] atm

2) A sample of oxygen, at 24°C, occupies a volume of 4.87 × 102 milliliters (mL) at 1.53 atm pressure. What pressure must be applied to compress the gas to a volume of 1.97 × 102 mL, with no temperature change? Enter your answer in the provided box. [ ] atm

3) A sample of oxygen gas has a volume of 2.31 L at 27°C. What volume will it occupy at 187°F if the pressure and number of mol are constant? Enter your answer in the provided box. [   ]L

4) A sample of oxygen gas has a volume of 3.38 L at 29°C. What volume will it occupy at 286 K if the pressure and number of mol are constant? Enter your answer in the provided box. [    ]L

5)Calculate the volume of N2 that results when 0.163 L of the gas is heated from 321.0 K to 350.0 K at 3.00 atm. Enter your answer in the provided box. [    ]L

6) Hydrogen sulfide, H2S, has the characteristic odor of rotten eggs. If a sample of H2S gas at 752.0 torr and 21.0°C in a 7.00−L container is allowed to expand into a 10.0−L container at 21.0°C, what is the pressure in the 10.0−L container? Enter your answer in the provided box. [ ] atm

7) A sample of helium gas has a volume of 1.16 L at 173 K and 5.00 atm. When the gas is compressed to 0.172 L at 50.0 atm, the temperature increases markedly. What is the final temperature? Enter your answer in the provided box. [   ]K

8) Cyclopropane, C3H6, is used as a general anesthetic. If a sample of cyclopropane stored in a 2.59−L container at 10.4 atm and 25.0°C is transferred to a 8.44−L container at 5.85 atm, what is the resulting temperature? Enter your answer in the provided box. [ ]°C

9) A 1.05 mol sample of hydrogen gas occupies 22.2 L. How many mol of hydrogen are needed to fill a 110.2 L container at the same pressure and temperature? Enter your
answer in the provided box. [ ] mol H2

10) How many mol of N2 gas will occupy a 5.95−L container at STP? Enter your answer in the provided box. [ ]mol N2

11) A 10.0−L gas cylinder contains 4.60 g H2 at 25°C. What is the pressure of the gas? Enter your answer in the provided box. [ ]atm

12) At what temperature will 1.00 mol of He fill a 5.50−L container at standard pressure? Enter your answer in the provided box. [ ]K

13) Calculate the pressure, in atmospheres, required to compress a sample of helium gas from 21.5 L (at 1.00 atm) to 4.51 L at constant temperature. Enter your answer in the box provided. [ ]atm

14) A balloon filled with helium gas at 1.00 atm occupies 11.8 L. What volume would the balloon occupy in the upper atmosphere, at a pressure of 0.17 atm and a constant temperature? Enter your answer in the box provided. [   ]L

15) The temperature on a summer day may be 104°F. Convert this value to Kelvin units. Enter your answer in the provided box. [ ]K

16) Determine the volume when a 2.00−L sample of N2(g) is heated from 130.0°C to 230.0°C. Enter your answer in the box provided. [ ]L

17) Determine the change in volume that takes place when a 2.77−L sample of N2(g) is heated from 250.0 K to 408.4 K. Enter your answer in the box provided. [ ]L

18) A balloon containing a sample of helium gas is warmed in an oven at constant pressure. If the balloon measures 1.25 L at room temperature (20.0°C), what is its volume at 98.0°C? Enter your answer in the box provided. [ ]L

19) If 1.08 L of gas at 14°C and 4.52 atm is compressed at a pressure of 116 atm and 49°C, calculate the new volume of the gas. Enter your answer in the box provided. [ ]L

20) A balloon filled with helium gas occupies 2.50 L at 25°C and 1.00 atm. When released, it rises to an altitude where the temperature is 20°C and the pressure is only 0.30 atm. Calculate the new volume of the balloon. Enter your answer in the box provided. [ ]L

21) Calculate the molar volume of O2 gas at STP. Enter your answer in the provided box.
[ ]L

22) A sample of nitrogen gas, stored in a 7.12−L container at 32.0°C, exerts a pressure of 8.06 atm. Calculate the number of moles of nitrogen gas in the container. Enter your answer in the box provided. [ ] mol

23) Calculate the volume of 62.1 g of carbon monoxide at STP. Enter your answer in the box provided. [ ]L

24) Calculate the density of carbon monoxide at STP. Enter your answer in the provided box. [ ]g/L at STP

25) How many grams of O2 gas occupy 11.0 L at STP? Enter your answer in the provided box. [ ]g

26) Select the single best answer. Which of these molecules would you expect to have the highest boiling point?
-methanol
-chloromethane
-methane

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1) Express 728 mm Hg in units of atm. Enter your answer in the provided box. [ 0.957895] atm

2) A sample of oxygen, at 24°C, occupies a volume of 4.87 × 102 milliliters (mL) at 1.53 atm pressure. What pressure must be applied to compress the gas to a volume of 1.97 × 102 mL, with no temperature change? Enter your answer in the provided box. [ 3.78] atm

3) A sample of oxygen gas has a volume of 2.31 L at 27°C. What volume will it occupy at 187°F if the pressure and number of mol are constant? Enter your answer in the provided box. [ 2.76] L

4) A sample of oxygen gas has a volume of 3.38 L at 29°C. What volume will it occupy at 286 K if the pressure and number of mol are constant? Enter your answer in the provided box. [ 3.20] L...

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