Question

calculate the molecular mass of ethyne atomic mass of carbon is 12 and hydrogen is 4​

Answer 1

ethyne= C2H4

Atomic mass..

C=12

H=1

Now..

molecular mass.

2×12+4×1

24+4

28

molecular mass of C2H4=28 U



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Answer 2

Ans the molecular formula of ethyne is C2H2

so, mass of carbon is 12 and hydrogen is 4

C2H2=12into2+2 into4

=24+8

=28

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