What volume of 0.716 M KBr solution is needed to provide 13.0 g of KBr?
A)6.55 mL
B)9.31 mL
C)18.5 mL
D)153 mL

Name: What volume of 0.716 M KBr solution is needed to provide 13.0 g of KBr? A)6.55 mL B)9.31 mL C)18.5 mL D)153 mL
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Quizplus · Accepted Answer

First, calculate the moles of KBr needed using its molar mass (KBr = 119.00 g/mol). Moles of KBr = 13.0 g / 119.00 g/mol = 0.109 moles. Then, use the molarity equation, M = moles/L, rearranged to L = moles/M. Volume = 0.109 moles / 0.716 M = 0.152 L or 152 mL.

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