find the density of ethyl alcohol if 80.0 cm^3 "weighs" 63.3g.

To find the density of ethyl alcohol, you need to use the formula:

Density = Mass / Volume

In this case, the mass is given as 63.3 grams and the volume is 80.0 cm^3.

So, you can divide the mass by the volume to calculate the density:

Density = 63.3 g / 80.0 cm^3

To simplify the units, you can convert cm^3 to mL because they are equivalent:

Density = 63.3 g / 80.0 mL

Finally, divide the mass by the volume to get the density:

Density = 0.791 g/mL

Therefore, the density of ethyl alcohol is 0.791 g/mL.