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NNADVOKAT [17]
3 years ago
10

A compound has a molar mass of 86.0 g/mol and an empirical formula of C3H7 what is the molecular formula

Chemistry
1 answer:
zmey [24]3 years ago
3 0
The formula for the molecular formula is molar mass/ empirical formula

So, the empirical formula of C3H7 is equal to C*3 + H*7 which is equal to 12*3 +  7. Then use the molecular formula = 86 / (12*3+7) = 2

Therefore, the molecular formula is 2 times the empirical formula which is C6H14.
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Answer:

a) galvanic cell

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c) i) K=6.27x10'34

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Explanation:

a) There are two kinds of an electrochemical cell, the first is called "galvanic cells", and the second "electrolytic cell".

The fuel cells are capable of produce electric energy through chemical reactions. These reactions are often spontaneous. So, the galvanic cell has a negative value for Gibbs free energy.

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c) i) look image attached

ii) k = look image attached

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