how much does a gallon of water weigh?
2007-05-17 12:04:41 · 9 answers · asked by hey 1 in Science & Mathematics ➔ Mathematics
and if u answer dont EVEN bother 2 write something mean like"i think u should figure out this ur self" or "stupid figure it out"
i will hate u
trust me[ask my friends]
2007-05-17 12:06:29 · update #1
people dis days
THEY DONT LISTEN and apperently CANT READ
2007-05-17 12:10:55 · update #2
1 gallon of water weighs 8.337 pounds
and I "mean" it
a pint of water weighs 1.04375 pounds
2007-05-17 12:07:32 · answer #1 · answered by Poetland 6 · 0⤊ 0⤋
Anyone can put a gallon of water on a scale but you should be thinking of the fundamental concept you are trying to learn.
Density is the weight per unit volume of a substance.
Density (D) = Weight (W) divided by the volume (V)
Another way to solve the equation is
Weight = Density x Volume
W=DxV
Density is usually expressed in pounds per cubic foot or grams per cubic centimeter (in the metric system)
You can look up the density of water on the internet or in a handbook (like the handbook of chemistry &physics)
Density of water is 1 gram/cubic centimeter or 62.5 pounds/cubic foot
Next you need to know the volume of a gallon.
Again you can look this up
One gallon is equal to
3785.4 cc
0.13368 cubic feet
Now you need to watch the units are consistant
Go back to the formula
Weight = Density times volume
You know the density and the volume
Weight = 0.13368 cubic feet times 62.5 pounds/cubic foor
Weight=8.35 pounds
One more thing about density.
It changes with temperature and pressure.
So to be correct you need to state this was calculated at STP
STP means Standard Temperature and Pressure
STP is about the same as saying room temperature and pressure.
If you were on the moon the same gallon of water would weigh less.
2007-05-17 19:46:14 · answer #2 · answered by JimE 1 · 0⤊ 0⤋
1 cup of water weighs 8 oz which is 1/2 a pound.
There are 16 cups in a gallon.
Each one weighs .5 pounds, so the gallon weighs 8 pounds.
16 * .5 = 8
2007-05-17 19:09:00 · answer #3 · answered by dave r 2 · 0⤊ 0⤋
1 gal= 3.78541 L.
1 L weigh 1 kg so 3.78541 L weigh 3.78541 kg. But 3.78541=1gal so 1 gal weigh 3.78541 kg or 8.34540 lbs.
2007-05-17 19:15:04 · answer #4 · answered by Salinda M 2 · 0⤊ 0⤋
How about "go to the store and read the label of a bottle on the shelf"? It is 128 ounces or 3.78 liters.
2007-05-17 19:09:10 · answer #5 · answered by cattbarf 7 · 0⤊ 1⤋
10lbs for 1 imp gal 8.33lbs for 1 us gal
2007-05-20 17:07:50 · answer #6 · answered by frozenbrew 4 · 0⤊ 0⤋
all you have to do is get a scale and weigh a gallon of water.... that simple!
2007-05-17 19:08:52 · answer #7 · answered by guille4ty 2 · 1⤊ 1⤋
Shouldn't you be doing your own homework?
2007-05-17 19:09:32 · answer #8 · answered by Mark 6 · 0⤊ 1⤋
8.345 lb
2007-05-17 19:13:44 · answer #9 · answered by stone w 2 · 0⤊ 0⤋