SOLUTION: a gasoline has density of about 0.65 g/ml. how much do 18 gal weigh in kilogram? in pounds?

Question 118386: a gasoline has density of about 0.65 g/ml. how much do 18 gal weigh in kilogram? in pounds?
Answer by tutor_paul(519) (Show Source): You can put this solution on YOUR website!
a gasoline has density of about 0.65 g/ml. how much do 18 gal weigh in kilogram? in pounds?
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First, convert the 18 gallons to ml. If you look it up, you will find that 1 gallon = 3785.4118 ml. So you can find out how many ml 18 gallons is by multiplying 3785.4118 by 18:
3785.4118 ml/gallon*18 gallons=68137.4 ml
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Remember the equation for Density: Density(D)=Mass(M)/Volume(V). In this case, you are given D and V, and they want you to find M. Solving for M in the Density Equation gives you:

Substituting in:

grams
But the problem wants the mass expressed in Kg. Since there are 1000 grams in a kilogram, you need to divide the result you got for M above by 1000.
Kilograms
I will let you convert the Kilograms to pounds to answer the second part.
Good Luck,
tutor_paul@yahoo.com

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