Question 154258
Gold has a density of 19.31 g/cm3. What is the mass of a sample of gold which displaces 70.8 mL of water?
<pre><font size = 4 color = "indigo"><b>
1 mL and 1 cm³ are identical.

So the sample of gold displaces 70.8 cm³ of water.

Therefore the proportion in words is:

19.31 grams of gold is to 1 cm³ of gold 

             as 

X grams of gold is to 70.8 cm³ of gold

And in symbols:

{{{19.31/1=X/70.8}}}

Cross-multiply:

{{{X = 19.31*70.8}}}

{{{X = 1367.148}}}grams

Edwin</pre>