What is the density of a rock that has a mass of 140 grams, and raises the water level from 25 mL to 57 mL?

1 Answer
anor277
Oct 6, 2016

#rho," density"# #=# #"Mass"/"Volume"#

Explanation:

We know (i) the mass of the rock, and (ii) also its volume because it displaced #32*mL# of water. And thus.....

Here #rho# #=# #(140*g)/((57-25)*mL)# #=# #(140*g)/(32*mL)# #~=# #4.4*g*mL^-1#.

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