Question

Calculate number of Na atoms in
(i) 0•46g of Na
(ii) 0•8 moles of Na

Answer 1

(i) In 0.46g of Na moles = 0.02

No. of atoms in 0.02 moles of Na = 0.02 * 6.023 * 10²³ = 12.046 * 10²¹

(ii) In 0.8 moles of Na, no. of atoms = 0.8 * 6.023 * 10²³ = 48.184 * 10²¹

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