How many atoms are in 5 moles of ch4

Molar mass CH4 = 12 + 1 . 4 = 16  g/mol

1 mole CH4 ------------ 16 g
5 moles CH4 ---------- x g

x = 5 . 16

x = 80 g

16 g CH4 ------------------ 6,02.10²³ atoms
80 g CH4 ------------------ y atoms

16 . y = 80 . 6.02x10²³

16 y = 

y = 

y =  atoms

hope this helps

The answer is d.potassium