Question

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Answer 1

Charles' Law  =   $\frac{V _{1} }{T _{1} }$=$\frac{V _{2} }{T_{2} }$
As per the law,
$V_{1}$=?
$T_{1}$=27 celsius=300 Kelvin
$V_{2}$=4.75l=4750ml
$T_{2}$=57 celsius=330 Kelvin
$\frac{ V_{1} }{300} = \frac{4750}{330}$
$V_{1}$=4318ml=4.318l
Answer=$V_{1}$=4.318l

Answer 2

Given t1 = 27 + 273 = 300K
          t2 = 57 + 273 = 330K
          v2 = 4.75 litres
We have to find v1
according to Charles law v1/t1 = v2/t2
therefore v1 = v2/t2 * t1
⇒ v1 = 4.75/330 * 300 = 4.318 litres(nearly)
The original vilume is 4.318 litres