Question

Which of the following has the molecular mass is equal to 28u?
a. CH
b. C2H4
c. C2H2
d. CHI​

Answer 1

Answer:

b answer

Explanation:

12*2+4=28

mass of carbon 12and it has 2molecule than we have multiple then we got 24 and mass no. of hydrogen is 1 and it has molecules 4 than we multiple we get 4. then we add 24+4 we get 28