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gas laws..

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nid404:
And one more

An open flask contains air at 27degrees celsius.Calculate the temperature at which it should be heated so that
a)1/3 of the air measured at 27degrees escapes out
b)1/3 of air measured at final temp escapes out

astarmathsandphysics:
A stopclock, connecting two bulbs of volumes 5l and 10l containing an ideal gas at 9atm and 6atm respectively is opened. What is the final pressure in the two bulbs??

partial pressures question
pressure of gas 1 =5/(5+10)*9=3atm
pressure gas 2 =10/(5+10)*6=4atm
partial =7atm

astarmathsandphysics:
An open flask contains air at 27degrees celsius.Calculate the temperature at which it should be heated so that
a)1/3 of the air measured at 27degrees escapes out
b)1/3 of air measured at final temp escapes out

1/3 escapes so volume is 3/2 of original volume so temple is 3/2*(273+27)=450K

I dont understand B. 1/3 of the air is 1/3 of the air does it mean the gas is heated again? If so 3/2*(450)=675K

nid404:
even  i don't know abt the b part

thanks for the other ones tho :)

nid404:
sir can u explain the partial pressure thing

how is 10/15=4

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