The temperature of a gas rose from 27°C to 77°C. At 77°C, the volume of the gas was 7.5 L. If the pressure did not change, what
was the initial volume of the gas

The initial volume of the gas : 6.43 L

Given

Temperature :

T₁=27+273 = 300 K

T₂=77+273 = 350 K

Volume : V₂=7.5 L

Required

The initial volume=V₁

Solution

Charles's Law  

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

Input the value :

V₁=(V₂ x T₁)/T₂

V₁=(7.5 L x 300 K)/350 K

V₁ = 6.43 L

kuchisake

kuchisake-onna (口裂け女, "slit mouth woman ") is a malevolent figure appearing in japanese ghost stories, possibly dating back to the edo period. she takes the form of a masked woman who approaches people and asks them if they believe she is pretty.

explanation: