Question
Please answer all these questions, or if not all some so thatI can compare my answers... please include steps!! Thanks... WillRate Good! a) Suppose 3.50 litres of dry oxygen are collected at 20degrees celsius and 630 Torr. What volume will the gas occupy atSTP? b) What pressure is required to compress 15.0mL of gas at0.500atm to a volume of 10.0mL at 37 degrees celsius? c) The temperature of a 425mL sample of gas is changed from127 degrees celsius to 37 degrees celsius at a constant pressure.What is the volume of the gas in litres and milliliters? d) Astronauts collect a 5.00L sample of the moon's"atmosphere" where the temperature is -137 degrees celsius and thepressure is 1.00 * 10-10 Torr. What would be the volumeof this sample when brought back to earth and exposed to atemperature of 25 degrees celsius and a pressure of 1.00 atm? e) A helium filled weather balloon, when released, has avolume of 10.0L at 27.0 degrees celsius and a pressure of 84.4kPa.Calculate the volume of the balloon after it encounters thefollowing upper atmospheric conditions: temperature of -30 degreescelcius and a pressure of 33.3 kPa? Please answer all these questions, or if not all some so thatI can compare my answers... please include steps!! Thanks... WillRate Good! a) Suppose 3.50 litres of dry oxygen are collected at 20degrees celsius and 630 Torr. What volume will the gas occupy atSTP? b) What pressure is required to compress 15.0mL of gas at0.500atm to a volume of 10.0mL at 37 degrees celsius? c) The temperature of a 425mL sample of gas is changed from127 degrees celsius to 37 degrees celsius at a constant pressure.What is the volume of the gas in litres and milliliters? d) Astronauts collect a 5.00L sample of the moon's"atmosphere" where the temperature is -137 degrees celsius and thepressure is 1.00 * 10-10 Torr. What would be the volumeof this sample when brought back to earth and exposed to atemperature of 25 degrees celsius and a pressure of 1.00 atm? e) A helium filled weather balloon, when released, has avolume of 10.0L at 27.0 degrees celsius and a pressure of 84.4kPa.Calculate the volume of the balloon after it encounters thefollowing upper atmospheric conditions: temperature of -30 degreescelcius and a pressure of 33.3 kPa?
Explanation / Answer
b) P1V1=P2V2 (don'tworry about R and T since they are held constant) P1 = P2V2 / V1 = 0.500 atm*15.00mL / 10.00 mL = 0.75 atm = 0.500 atm*15.00mL / 10.00 mL = 0.75 atm