Question

Calculate the mass of 3.011 × 10²⁴ atoms of carbon.

Answer 1

Number of carbon atoms = 3.011 × 10²⁴

$\frac{Mass}{Molarmass}=\frac{No.ofatoms}{N_A}$

We know that 12g (atomic mass of carbon) of carbon contains 6.022 × 10²³ carbon atoms.
Molar mass of carbon atom = 12g/mol

From formula, Mass= $Mass=\frac{3.011\times {10}^{24}}{6.023\times {10}^{23}}\times 12=60g$
Hence, the mass of 3.011 × 10²⁴ carbon atoms =60g (approximately)