Answer:
Step-by-step explanation:
12.04 × 1023 atoms
24g makes up the mass of carbon. 6.022×1023 atoms. The number of atoms in 24 g of carbon can now be calculated as, 24g× (6.022 × 1023 atoms) / 12g = 12.04 × 1023 atoms.
OR
Carbon has an atomic weight of roughly 12 g/mol (look up the precise number if needed).
24.0 g / 12 g/mol = 2 mol
A mol is a number, so this is already an adequate answer, but if you want an answer in base-10 numbers we then have to know that a mol is equal to avogadro's number which is defined as 6.02214*10^23.
Which means that for carbon:
24.0 g = 2 mol = 12.04428 * 10^23 atoms