by Guest » Fri Dec 02, 2005 1:52 am
If it is a liquid you need to find out how much volume 120 grams is in Milliliters. Then divide 120 by the volume you get. This will give you specific gravity. (Sp. Gravity is the comparison of any liquid to water). Take that number multiply it by 8.35 (the weight in pounds of a gallon of water). The number you get is the density of the water expressed in lbs. per gallons.
SO...say your 120 grams of liquid is 125 milliliters. 120/125 = 0.96
0.96 * 8.35 = 8.016 lbs/gallons.