The mass of an atom of an element A is eight times a.m.u .What is the relative atomic mass of A?

Question

The mass of an  atom of an element A is eight times the mass of C¹² isotop.What is the relative atomic mass of A?

Answer 1

1 amu = 1.66 x 10^-27 kg = (1/2) x (mass of a single carbon-12 atom)

 

So m_A = 8(1.66 x 10^-27 kg) = 1.328 x 10^-26 kg