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Mr CO(NH2)2 = 60
volume (v) = 500 mL = 0,5 liter
T = 27°C = 300 K
R = 0,082
larutannya non-elektrolit, maka i=1
π = ?
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mol (n) = massa CO(NH2)2 / Mr
n = 3 gr / 60
n = 0,05 mol
M = n / v
M = 0,05 / 0,5
M = 0,1 M
π = MRTi
π = 0,1 . 0,082 . 300 . 1
π = 2,46 atm