Answer:
Explanation:
According to Charles rule,
[tex]\dfrac{V_{1}}{T_{1}}=\dfrac{V_{2}}{T_{2}}[/tex]
V₁ = initial volume = 1145 mL
V₂ = final volume = 765 mL & T₂ = final temperature = 640 K
[tex]\dfrac{1145}{T_{2}}=\dfrac{765}{640}\\\\\\Cross \multiply\\\\1145*640=T_{2}*765\\\\\dfrac{1145*640}{765}=T_{2}\\\\T_{2} = 957.9 \ K[/tex]
