Chemistry help!?

Question

which substance has the greatest molecular mass? A)H202 B)NO C)CF4 D)I2

AND PLEASE EXPLAIN HOW U GOT THE ANSWER!!!

Answer 1

Molecular mass = sum of the masses of the elements

H2O2 for example, is 2 hydrogens and 2 oxygens. So, look up the mass of hydrogen on the periodic table (1g/mol) and the mass of oxygen from the periodic table (16g/mol).

2 H + 2 O = 2(1) +2(16) = 34g/mol

Repeat a similar process for the remaining 3 compounds and pick the greatest.