Question

At 27 degree Celsius temperature and 152 cm pressure the volume of a gas is 600ml. Calculate the volume of the gas at STP

Answer 1

your question is not clear u want to find volume but volume is already given in the question as moles are not given in question that's y I found moles in my given answer

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Answer 2

The volume of the gas at STP is 1092 ml

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atmosphere respectively.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 152 cm

$P_2$ = final pressure of gas (at STP) = 76 cm  (1atm = 76 cm Hg)

$V_1$ = initial volume of gas = 600 ml

$V_2$ = final volume of gas (at STP) = ?

$T_1$ = initial temperature of gas = $27^oC=273+27=300K$

$T_2$ = final temperature of gas (at STP)= $273K$

Now put all the given values in the above equation, we get:

$\frac{152\times 600}{300K}=\frac{76\times V_2}{273K}$

$V_2=1092ml$

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