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yawa3891 [41]
2 years ago
5

Which of the following hydrocarbons contains the greatest percent by mass of carbon?

Chemistry
1 answer:
astraxan [27]2 years ago
8 0

C₂H₂ has  the greatest percent by mass of carbon (92.3%)

<h3>Further explanation</h3>

Given

Hydrocarbons

Required

The greatest percent by mass of Carbon

Solution

Proust states <em>the Comparative Law</em> that compounds are formed from elements with the same Mass Comparison so that compounds have a constant composition of elements

% A in AxBy = (x.Ar A/MW AxBy) x 100%

C₃H₄ = 3.12/40 x 100%=90%

CH₄ = 12/16 x 100% = 75%

C₂H₄=2.12/28 x 100% = 85.7%

C₂H₂=2.12/26 x 100% = 92.3%

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If 54.9 L of an ideal gas is cooled from 64 degrees C to 7 degrees C, what will the volume of the gas become?
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