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Chemistry-

General

Easy

Question

A student forgot to add the reaction mixture to the round bottomed flask at 27°C but instead he/she placed the flask on the flame. After a lapse of time, he realized his mistake and using a pyrometer he found the temperature of flask was 477°C. The fraction of air that has been expelled out is

$\frac{4}{5}$
$\frac{2}{5}$
$\frac{1}{5}$
$\frac{3}{5}$

The correct answer is: $fraction numerator 3 over denominator 5 end fraction$

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Which of the following are correct statements.
1) 760 torr is equal to 1 atmosphere
2) 106 dynes/c $straight m squared$ is called 1 bar
3) 105 Newtons / $straight m squared$ is Pascal
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1) 760 torr is equal to 1 atmosphere
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