Question #16fd2

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Question #16fd2

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Answer 1 · 2017-09-08T21:53:45

The hint you need i think is the volume conversion liters to $c m^{3}$ $cm^3$

Explanation:

To start, there is one rule you have to know.

$1 m l = 1 c m^{3}$ $1 ml = 1cm^3$

The given is 7 liters, so we have to convert that to milliliters by multiplying it by thousand according to the metric system.
$7 L i t e r s \to 7 \cdot 10^{3} m l = 7000 m l$ $7 Liters rarr 7 *10^3 ml = 7000 ml$

From rule above:
$1 m l = 1 c m^{3}$ $1 ml = 1cm^3$
$7, 000 m l = 7000 c m^{3}$ $7,000 ml = 7000cm^3$

Now that we have both volume and mass in the desired units (7000 $c m^{3}$ $cm^3$ and 200 grams)

$density = \frac{mass}{volume} = 200/7000=0.02857 g/ c m^{3}$ $"density"="mass"/"volume"="200/7000=0.02857 g/"cm^3$

Hope that this helps. :)

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Question #16fd2

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