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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Lumberjackjoe Lumberjackjoe
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7 years ago
Please hep
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#1
Valued Member
7 years ago
By using the ideal gas equation, PV = nRT ....(1)
the mw for F2 = 38.0 g/mole

To calculate the density for F2, then
MW=weight/moles ........(2)
density = weight / volume.......(3)
moles (n) = weight (g) / mw (g/n) ....(4)

Substitute equations (3) & (4) into (1)

PV = (wt / mw ) x RT
P x mw / RT = wt / V
 (1 atm) x (38.0 g/mole ) / [ (.0821 L atm/moleK) x (273.15 k)] = 1.69 g/L = 0.00169 g/ml the densit of flourine
 
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