Question

find the molecular formula of a given empirical formula if the molar mass was determined to be 453 g/mol

Answer 1

\[C_8H_9NO_2\]

Answer 2

Is that a H9 or H3?

Answer 3

9

Answer 4

C-12g/mol H-1g/mol N-14g/mol O-16g/mol

molar mass of C: 12x8=96g/mol
molar mass of H: 1x9g/mol=9g/mol
N: 14g/mol
O: 16x2=32g/mol

96+9+14+32=151g/mol

453g/mol/151g/mol=3

8x3=24
3x9=27
1x3=3
2x3=6

Therefore the molecular formula= C24H27H3O6
(:

Answer 5

Note the numbers in the molecular formula I typed out are subscripts.