How many sodium atoms are in 6.0 g of Na₃N?

Name: How many sodium atoms are in 6.0 g of Na 3 N?
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Question

Quizplus · Accepted Answer

First, calculate the molar mass of Na₃N: (3 × 23) + 14 = 83 g/mol. Then, find moles of Na₃N in 6.0 g: 6.0 g / 83 g/mol = 0.0723 mol. Since each formula unit of Na₃N contains 3 sodium atoms, multiply the moles of Na₃N by 3 and Avogadro's number (6.022 × 10²³) to find the number of sodium atoms: 0.0723 mol × 3 × 6.022 × 10²³ = 1.3 × 10²³ atoms.

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