Question

Calculate the number of atoms in 9.2g of
Na.​

Answer 1

★ Answer

no of moles of sodium

= mass of sodium / molar mass of sodium

= 9.2/23

= 0.4 moles

1 mol of sodium = 6.022×10^23 atoms

therefore ;

0.4 mol of sodium = 0.4×6.022×10^23 atoms

=2.4×10^23 atoms

Answer 2

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