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Answer:
m = 35.1 g
Step-by-step explanation:
Molarity = number of moles ÷ volume (in litres)
M = n ÷ V
But n = mass ÷ Molar mass
=> M = m ÷ (MM × V)
=> m = M × MM × V
=> m = 1.5 M × (23 + 35.5) g/mol × 0.4 L
=> m = 35.1 g
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