Question

what is the molar mass for C8H9NO2?

Answer 1

To find the molar mass of the given compound find the sum of the molar masses of each element multiplied by their subscripts:

C-12g/mol

H-1g/mol

N-14g/mol

O-16g/mol

$12g/mol\cdot8+1g/mol\cdot9+14g/mol\cdot1+16g/mol\cdot2=151g/mol$

The molar mass of C8H9NO2 is 151g/mol