Question

calculate the no., of moles :- 46 gm of sodium atom

Answer 1

Number of moles is given by the formula
n = given mass/ molar mass
Where n denotes number of mole.
Here
Given mass = 46g
Molar mass = 23 g per mole { as molar mass of sodium = 23g per mole}

n = 46/ 23 mol
Hence number of mole of sodium in 23 g is 2.