by kevin » Fri Jan 17, 2014 4:28 am 
			
			The answer to your problem I believe is 8.14 pounds/US gallon.  1 pound = 454 grams.  So .769g/cm^3 x 1/454 grams/pound=  0.0022lbs/cm^3 . * A cm^3 is = to 1 mL.*  So 0.0022lbs/1ml x 1000mL/1L= 2.2lbs/L. *3.79L=1US gallon *  so 2.2lbs/1L x 3.79L/US gallon=  8.14 pounds per US Gallon ..  I hope this helps you out.