ASSIGNMENT: GAS LAWS Solve the following: 1. A 2.00 gram sample of gas at 27.0 °C and 1.00 atm occupies 1.00 L. What is the molecular weight of the gas? 2. Compute the volume of 14 grams of nitrous oxide, N₂O, at STP? 3. An electronic vacuum tube was sealed off during manufacture at a pressure of 1.8 x 10-5 torr at 27 °C. Its volume is 100 cm³. Compute the number of gas molecules remaining in the tube. (6.02 x 10 23 molecules/mole)

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Chapter1: Chemical Foundations
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ASSIGNMENT: GAS LAWS
id wilçuld
14
15
7. If the density of carbon monoxide is 3.17 g/L at -20 OC and 2.35 atm, what is the
approximate molecular weight?
16
Solve the following:
1. A 2.00 gram sample of gas at 27.0 °C and 1.00 atm occupies 1.00 L. What is the
molecular weight of the gas?
2. Compute the volume of 14 grams of nitrous oxide, N₂O, at STP?
3. An electronic vacuum tube was sealed off during manufacture at a pressure of 1.8 x 10-5
torr at 27 °C. Its volume is 100 cm³. Compute the number of gas molecules remaining in
the tube. (6.02 x 10 23 molecules/mole)
4.
Compute the approximate density of methane, CH4 at STP.
I
5. A gas occupying a volume of 725 mL at a pressure of 0.970 atm is allowed to expand at
constant temperature until its pressure reaches 0.541 atm. What is its final volume?
6. A sample of gas occupies a volume of 625 mL at 22.0 degree C and 1.12 atm. Calculate
the new temperature if the volume is changed to 1.15 liter and the pressure is changed
to 75.2 cm Hg
17
18
Transcribed Image Text:ASSIGNMENT: GAS LAWS id wilçuld 14 15 7. If the density of carbon monoxide is 3.17 g/L at -20 OC and 2.35 atm, what is the approximate molecular weight? 16 Solve the following: 1. A 2.00 gram sample of gas at 27.0 °C and 1.00 atm occupies 1.00 L. What is the molecular weight of the gas? 2. Compute the volume of 14 grams of nitrous oxide, N₂O, at STP? 3. An electronic vacuum tube was sealed off during manufacture at a pressure of 1.8 x 10-5 torr at 27 °C. Its volume is 100 cm³. Compute the number of gas molecules remaining in the tube. (6.02 x 10 23 molecules/mole) 4. Compute the approximate density of methane, CH4 at STP. I 5. A gas occupying a volume of 725 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume? 6. A sample of gas occupies a volume of 625 mL at 22.0 degree C and 1.12 atm. Calculate the new temperature if the volume is changed to 1.15 liter and the pressure is changed to 75.2 cm Hg 17 18
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