Question

A chemist collects 156 mL of carbon dioxide gas at 25°C and 790 torr. What would the volume of the carbon dioxide be at STP?

Answer 1

at S.T.P

pressure(P1)= 760 torr

temperature (T1)= 273k

volume(V1)=?

and,

P2= 790 torr

V2= 156ml

T2=298k

we know that

$\frac{(p1) \times (v1)}{t1} = \frac{(p2) \times (v2)}{t2} \\ \frac{760 \times (v1)}{273} = \frac{790 \times 156}{298} \\ v1 = \frac{79 \times 156 \times 273}{298 \times 76} = 148.554045ml$