Find the number of molecules in 39.2 g of nitrogen
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find the number of molecules in 39.2 of nitrogen
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Answer:
1.68 × 10²⁴ molecules
Explanation:
Given mass of nitrogen = 39.2 g
Molar mass of nitrogen = 14 g
Number of moles = Given mass / Molar mass
= 39.2/14 mol
Now,
Number of molecules = Number of moles × Avogadro constant
[Avogadro constant = 6.022 × 10²³]
= (39.2/14) × 6.022 × 10²³
= 16.86 × 10²³
= 1.68 × 10²⁴ molecules
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