Essential Chemistry for IGCSE - Chemical Calculations (Section 5 - No. 4)
What is the mass of 2 moles of NaCl? (Na = 23, Cl = 35.5)
29.25 g
58.5 g
117 g
100g
Explanation
Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol. Therefore, 2 moles * 58.5 g/mol = 117g.
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