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tontron tontron
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11 years ago
What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP?   ____ g / mol

a.  .274
b.  3.64
c.  78.2
d.  137
e.  365
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wrote...
11 years ago
1 mole of a gas at STP has volume 22.4 litres

Therefore the Freon-11 gas will have molar mass= 22.4*6.13g

= 137.312 g/mol

answer d.

check the units in the calculation  - (L * g / L = g)
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