an open flask contains air at 27 °c .calculate the temperature at which it should be heated so that one third of air measured at 27°c escape out.
1)177k
2)450k
3)127k
4)400k
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since its an open container this the pressure is constant... and if it's open then there is must be song air in the container even after expelling air so volume is constant...
The rest of the answer is in the photo above...
hope it helps...
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