Answer:
32.232 L
Explanation:
-Given the volume at 1.58atm is 20.4 L
-At standard pressure, the pressure is 1.00atm
-We apply Charle's Law to find the volume at STP:
[tex]P_1V_1=P_2V_2\\\\\\1.58\ atm\times 20.4\ L=1.00\ atm\times V_2\\\\V_2=\frac{1.58\times 20.4}{1.00}\\\\\\\\=32.232\ L[/tex]
Hence, the volume of the gas at STP is 32.232 L