Work Step by Step
Atomic weights: $Na: 22.990u,\ K: 39.098u,\ Ca: 40.078u,\ Mg: 24.305u$ Masses: 0.50 mol Na : 11.5 g 0.20 mol K: 7.82 g 0.40 mol Ca: 16 g 0.60 mol Mg: 14 g Largest mass is 0.40 mol of Ca.
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