Question

Unheated

Answer 1

Explanation:

Using the Combined Gas Law, which is:

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

(With $P_1,V_1,T_1$ being initial pressure, volume and temperature; and

$P_2,V_2,T_2$ being the new values)

We can move the units around in order to solve for $P_2$, which would look like this:

$P_{2} =\frac{P_1V_1T_2}{V_2T_1}$

Then we convert the Celsius temperature to Kelvin:

$25$ °$C$ = $289$ $K$

$100$ °$C$ = $373$ $K$

And now, we plug in all of the values and solve, with volume remaining as a constant:

$P_{2} =\frac{(1.00 atm) (20.0 L) (373 K)}{(20.0 L) (298 K)}$ $=$

$1.25$ $atm$ or $127$ $kPa$