Question #16fd2

1 Answer
Sep 8, 2017

Answer:

The hint you need i think is the volume conversion liters to #cm^3#

Explanation:

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

#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 Liters rarr 7 *10^3 ml = 7000 ml#

From rule above:
#1 ml = 1cm^3#
#7,000 ml = 7000cm^3#

Now that we have both volume and mass in the desired units (7000 #cm^3# and 200 grams)

#"density"="mass"/"volume"="200/7000=0.02857 g/"cm^3#

Hope that this helps. :)