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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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ykc.arifefarizi ykc.arifefarizi
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4 years ago
please help me
"find the molecular percentage of the cycloalkene that contains 10% hydrogen mass"
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#1
Educator
4 years ago
Hi there,

Cycloalkenes have the general formula CnH2(n-m). The letter m represents the number of double bonds.

For example, if we have:

Cyclopropene (C3H4) -- 3 carbons, 1 double bond

Hydrogen Molar Mass to Total Molar Mass

4.04 / 40.06 = 0.10 or 10% 👈

Cyclobutene (C4H6) -- 4 carbons, 1 double bond

6.06 / 54.09 = 0.11 or 11%

Cyclopentene (C5H8) -- 5 carbons, 1 double bond

8.08 / 68.12 = 0.12 or 12%

As you see, the % continues to grow, the one we choose is the first one.
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