Question

What is the molarity of a solution that contains 4.5 moles of solute in a 500 mL solution? Show your work

Answer 1

What I did I converted ml to l by multiplying 500*.001 and then use the formula mol/l 4.5/0.5=9

Answer 2

The answer is:  " 9.0 M " .
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Molarity, "M", equals moles of solute/ L solution.

1000 mL = 1 L (exact conversion).
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(4.5 mol / 500 mL) * (1 L / 1000 mL) = (4.5) / (500 
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Molarity, "M", equals moles of solute/ L solution.

1000 mL = 1 L (exact conversion).
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(4.5 mol / 500 mL) * (1000 mL / 1L ) = (4.5 * 1000) / (500)  M ;
                                                          = (4.5 * 10) / 5   M ;
                                                          = (4.5 * 2) M = 9.0 M
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The answer is:  " 9.0 M " .
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