The boiling point of water at sea level is 100 C At higher altitudes the

# The boiling point of water at sea level is 100 c at

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21) The boiling point of water at sea level is 100 °C. At higher altitudes, the boiling point of water will be A) lower, because temperatures are lower.B) lower, because the atmospheric pressure is lower.C) higher, because the altitude is greater.D) higher, because there are fewer water molecules in the air.E) the same, because water always boils at 100 °C.22) At 570. mm Hg and 25 °C, a gas sample has a volume of 2270 mL. What is the final pressure(in mmHg) at a volume of 1250 mL and a temperature of 175 °C?23) A diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperatureof 15 °C. What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm and the temperature is 27 °C?
24) At STP, how many moles of helium would occupy 1.00 L?25) A gas sample contains 4.0 g of CH4 and 2.0 g of He. What is the volume of the sample at STP?A) 130 LB) 11 LC) 17 LD) 30. LE) 5.6 L26) A tank contains a mixture of helium, neon, and argon gases. If the total pressure in the tank is 490. mmHg and the partial pressures of helium and argon are 215 mmHg and 102 mmHg, respectively, what is the partial pressure of neon?27) Which of the following correctly describes the partial pressures of gases in the body?
28) A hydrogen bond is

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• Fall '10
• LingChen

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