# A fixed mass of gas occupies a volume of 20$$cm^3$$ at a fixed pressure...

Question 490
A
2.5$$cm^3$$
B
15.5$$cm^3$$
C
18.7$$cm^3$$
D
21.4$$cm^3$$
E
72.5$$cm^3$$
##### Explanation
$$v_2=\frac{v_1p_1}{p_2}=\frac{20\times700}{750}=18.66=18.7cm^3$$

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