Question

a compound contain 6 atoms of carbon per molecule.the percentage of carbon in this compound is 40%.the molecular mass of the compound will be
78
80
176
180

Answer 1

.........................

Answer 2

Answer:180

Explanation:formula for determing % of atom is %C=no.of carbon atoms×atomic mass of carbon×100 divide by molecular mass.

So molecular mass = no of carbon atom× atomic mass of carbon ×100 divide by % of C..

Molecular mass=6×12 ×100 divide by 40=180