chemistry

1) A gas has a pressure of 3 atm when the temperature is 25C, what is the new pressure when the temperature is raised to 50C? (make sure temp is in K) - round answer to hundredths place

2) Neon at 2 atm and 273K has a volume of 10L. What is the new pressure if the volume is 20L and temperature is 400K? (round to tenths place)

3)What is the new volume of a gas originally at 273K and 20 L when the temperature is increased to 300K? (to the nearest whole number)

4)A 12 L sample of gas at 2 atm, has the pressure decreased to 1 atm, what is the new volume? *

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  1. p v = n r t ... pressure, volume, number of moles, gas constant, Kelvin temp

    set up the starting equation , then change what you need to
    ... and see the results

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  2. 1. Make use of pressure law,
    P1/T1 = P2/T2, since volume is constant (ensure your Temperature is converted from Celsius to Kelvin)
    2. Make use of the general Gas Law.
    P1V1/T1 = P2V2/T2 (ensure your units are converted)
    3. Charles Law is suitable for this V1/T1 = V2/T2
    4. Use Boyles Law

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