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Molar mass of NaCl: The molar mass of NaCl is:
NaCl 1 Na × 22.99 g/mol Na = 22.99 g/mol
1 Cl × 35.45 g/mol Cl = 35.45 g/mol
Total: 44.01 g/mol
Avogadro’s Number: 6.022 × 1023 NaCl formula unit in 1 mole CO2.
A salt crystal has a mass of 0.15mg. How many NaCl formula units does it contain? Express your answer using 2 significant figures.
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