6. A cylinder of medical oxygen has a volume of 25.4 L, and contains O₂ at a pressure of 125 atm and a temperature of 25 °C. What volume of O, does this correspond to at normal body conditions, that is, 1.00 atm and 37 °C?

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### Educational Transcription:

#### Problems on Gas Laws and Molar Mass

**6.** A cylinder of medical oxygen has a volume of 25.4 L, and contains \( O_2 \) at a pressure of 125 atm and a temperature of 25 °C. What volume of \( O_2 \) does this correspond to at normal body conditions, that is, 1.00 atm and 37 °C?

**7.** While resting, the average 70-kg human male consumes 14 L of pure \( O_2 \) per hour at 25 °C and 100 kPa. How many moles of \( O_2 \) are consumed by a 70 kg man while resting for 1.0 hour?

**8.** What is the molar mass of a gas if 0.281 g of the gas occupies a volume of 125 mL at a temperature 126 °C and a pressure of 777 torr?

**9.** The density of a certain gaseous fluoride of phosphorus is 3.93 g/L at STP. Calculate the molar mass of this fluoride and determine its molecular formula.

**10.** A mixture of 2.00 g of \( H_2 \), 1.00 g of \( N_2 \), and 0.820 g of \( Ar \) is stored in a closed container at STP. Find the volume of the container, assuming that the gases exhibit ideal behavior.

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These problems emphasize the application of gas laws and concepts such as molar mass and density. They are designed to help students understand the behavior of gases in different conditions and calculate various parameters related to gases.
Transcribed Image Text:### Educational Transcription: #### Problems on Gas Laws and Molar Mass **6.** A cylinder of medical oxygen has a volume of 25.4 L, and contains \( O_2 \) at a pressure of 125 atm and a temperature of 25 °C. What volume of \( O_2 \) does this correspond to at normal body conditions, that is, 1.00 atm and 37 °C? **7.** While resting, the average 70-kg human male consumes 14 L of pure \( O_2 \) per hour at 25 °C and 100 kPa. How many moles of \( O_2 \) are consumed by a 70 kg man while resting for 1.0 hour? **8.** What is the molar mass of a gas if 0.281 g of the gas occupies a volume of 125 mL at a temperature 126 °C and a pressure of 777 torr? **9.** The density of a certain gaseous fluoride of phosphorus is 3.93 g/L at STP. Calculate the molar mass of this fluoride and determine its molecular formula. **10.** A mixture of 2.00 g of \( H_2 \), 1.00 g of \( N_2 \), and 0.820 g of \( Ar \) is stored in a closed container at STP. Find the volume of the container, assuming that the gases exhibit ideal behavior. --- These problems emphasize the application of gas laws and concepts such as molar mass and density. They are designed to help students understand the behavior of gases in different conditions and calculate various parameters related to gases.
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