Answer:
n=mass in grams/molar mass
n=32/16
n=2 mol
no. of atoms= 5×2×6.02×10^32
= 6.02×10^24
- hope it's help
- correct me if I'm wrong
Explanation:
well the molar mass of 1 mol of methane is 16g.
32 means two moles of methane.
According to formula
n=mass in gram/molar mass
n=32/16
n=2 mol
now multiply these 2 mole with avagadros number, also methane contain 5 atoms ( CHE ) i.e
no. of atoms = 5×2×6.02×10^23
= 6.02× 10^24
