Answer:
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The molar mass of gas = 238.29 g/mol
<h3>Further explanation</h3>
Given
mass = 81.5 g
P=1.75 atm
V=4.92 L
T=307 K
Required
molar mass
Solution
The gas equation can be written


So the equation becomes :

Input the value :

Give the positional isomers of 2 halopropane
(CH3)2CH
answer:
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Second law is tennis
First law is golf
Third law is soccer