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PV = m/M×RT
P = 1 atm
V = 8.2 L
m = 9gm
M = ?
R = 0.0821 L-atm/K mol.
T = 300 K
So,
M = mRT/PV
= 9×0.0821×300/8.2×1
= 27gm.
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Answered by
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pv = nrt
r = 0.082
molecular mass = 9 x 0.082 x 300
1 x 8.2
= 9 x 8.2 x 3
8.2
9 x 3=27
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