Question

Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given atomic mass of na = 23, u, fe = 56 u)

Answer 1

Answer:

100g of sodium have more no. of atoms

Explanation:

given mass of sodium = given mass of iron=100g

sodium atomic mass = 23u

no. of particle = ?

avagadro no. = 6.022 ✖ 10 to power 23

no. of atoms present in sodium =10023/✖ 6.022 ✖ 10 to power 23

so u have to write like this in last no.of atom in sodium is more then iron