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element-molar mass (g/mol)
bromine-79.91
carbon-12.01
fluorine-19.00
hydrogen-1.0079
manganese-54.94
nitrogen-14.01
oxygen-16.00
potassium-39.1
sodium-22.99
a) 6
b) 8
c) 2
d) 4
e) 10
Styrene has the empirical formula CH. It has a molar mass of 104 g. What is the multiplier to get the molecular formula?
2016-06-16 7:02 pm
回答 (3)
2016-06-16 7:14 pm
Let x be the multiplier.
Then, the molecular formula = (CH)ₓ
The molar mass :
x(12.01 + 1.0079) = 104
13x ≈ 104
x = 8
The answer is : b) 8
Then, the molecular formula = (CH)ₓ
The molar mass :
x(12.01 + 1.0079) = 104
13x ≈ 104
x = 8
The answer is : b) 8
2016-06-16 7:44 pm
From the atomic masses
C = 12 , H = 1 . Hence CH = 12 + 1 = 13
104/13 = 8
Hence molecular formula is C8H8
C = 12 , H = 1 . Hence CH = 12 + 1 = 13
104/13 = 8
Hence molecular formula is C8H8
2016-06-16 7:12 pm
CH = 12 + 1 = 13
104/13 = 8
C8H8
104/13 = 8
C8H8
收錄日期: 2021-04-18 15:07:01
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