I need the answer

Question

Calculate the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.

Answer 1

Is this all of the information you're given? I would typically use the formula PV=nRT where

P = pressure

V = volume

n = number of moles

R = (constant)

t = temperature

if you assume all other factors are constant (pressure, specifically) then

6.00(x) = 20(y)

4.00(x) = z(y)

z = (4.00 / 6.00) * 20 = 13.3

so the difference would be 16.7

however if pressure is a factor, then you should factor that into the equation