Explore BrainMass
Share

Explore BrainMass

    Gas expansion problems

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    The answers are given; please provide the workings.

    1. A tire contains 1ft3 of air at a gauge pressure of 28lb/in2. How much additional air at atmosphere pressure must be pumped into the tire to raise the pressure to 36lb/in2 at the same temperature?
    Answer: 0.53ft3

    2. A gas having a volume of 100ft3 at 27°C is expanded to 120ft3 by being heated at constant pressure. To what temperature has it been heated to have this new volume?
    Answer: 87°C

    3. A tire contains air at a gauge pressure of 28lb/in2 at 60°F. If the tire's volume does not change, what will be the gauge pressure be when its temperature is 100°F
    Answer: 31.3 lb/in2

    4. A gas sample occupies a volume of 1m3 at a temperature of 27°C and a pressure of 1atm. Find its volume at 127°C and 0.5atm
    Answer: 2.67m3

    © BrainMass Inc. brainmass.com October 10, 2019, 12:20 am ad1c9bdddf
    https://brainmass.com/physics/atmosphere/gas-expansion-problems-288361

    Solution Preview

    1. A tire contains 1ft3 of air at a gauge pressure of 28lb/in2. How much additional air at atmosphere pressure must be pumped into the tire to raise the pressure to 36lb/in2 at the same temperature?

    Let x = added volume
    P1/V1 = Pa/Va
    28/1 = 14.7/x
    X = 0.53 ft3
    OR
    P1 + x(Pa) = P2
    28 + x(14.7) = 36
    X = ...

    Solution Summary

    The expert examines the gas expansion problems.

    $2.19