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Question #3e2ee

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Answer 1 · 2014-03-11T13:28:10

The formula for density is Density = $\frac{M a s s}{V o l u m e}$ $(Mass)/(Volume)$ , which you can abbreviate to D = $\frac{M}{V}$ $M/V$ .

Here, we are given the Density (0.714 $\frac{g}{L}$ $g/L$ ) and the Volume (25.0L). Plugging into the equation we have:

$0.714$ $0.714$ $\frac{g}{L}$ $g/L$ = $\frac{M}{25.0 L}$ $M/(25.0L)$

To solve for the unknown (in this case, M), multiply both sides of the equation by $25.0 L$ $25.0L$ (notice that the units of L cancels out on both sides, and we are left with the units we want: grams).

We are then left with:

17.85g = M, so our mass is 17.85 grams.

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