How do I find mass from density and volume?
In trying to solve any problem I always look at the units. In this case you want to find the mass in grams. You have density in g/ml and volume in ml. You look at how to multiply or divide to end up with the proper units. If you multiply g/ml by ml, the ml cancels out leaving only the mass. So if you multiply the density (1.11 g/ml) by the volume (500 ml) you get 555g. To check this take 555g and divide by 500ml and you should get 1.11 g/ml. This will work for almost any type of units.
