alleryMohr's salt has molar mass 392 g/mol. What mass makes 250 mL of a 0.05 M solution?
A4.9 g
B2.45 g
C9.8 g
D19.6 g
Answer & Solution
Correct answer: A. 4.9 g
Mass = 0.05 mol/L x 0.250 L x 392 g/mol = 4.9 g.
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