Question

If one mole of Na contains x atoms of sodium what is the number of moles contained in 46 g of sodium
Answer should be 2 or 2x?

Answer 1

Explanation:

Step 1: First, we need to find the number of moles present in 46 g of Na.

We know, Atomic Weight of Na = 23 g/mol.

Number of moles = Weight in g/Atomic Weight = 46/23=2 mol.

Step 2: Calculating the number of atoms present in 2 moles of Na.

No. of atoms of Na = No. of moles of Na * Avogadro Constant = 2×6.022×1023=12.044×1023 atoms are present in 46g of Na

Answer 2

Answer:

2

Explanation:

As given mass of sodium is 46 g

and molar mass is 23 g

As we know, 

gram atoms = gram mole

here,

$no. \: of \: moles = \: \frac{23}{46} = 2$