how much does water weigh?
152321
1 gallon of water=8.33 pounds\n\n\nGallons into Pounds: Multiply the specific gravity of the liquid by 8.33* (weight in pounds of 1 gallon of water); then multiply this result by the number of gallons, to obtain the weight in pounds.
917775
Do you mean mass or weight?\n\nTo get the mass of 1 cubic meter of water:\n\nA cubic meter is a cube 1m x 1m x 1m \n\nConvert to centimeters this gives 100cm x 100 cm x 100cm\n\nTherefore the volumen of the cube in cubic cm is 1000000 cm3\n\n1 litre = 1000 cm3 therfore :\nvolume in litres is 1000000 / 1000 = 1000 l\n\nrelative density of water is 1kg / l therefore the mass of the water is 1000kg or 1 tonne.\n\nWeight is the gravitational force exerceted on the water by the earths gravitational pull. I'm assuming the water is stationary at ground level and not in orbit or something daft. The effect of gravity at ground level is given by the constant g which is 9.8N/kg.\n\nTherefore the weight of the water is 1000 * 9.8 =  9800N
572696
density of pure water is 62.4 lbs/sq ft.\n\nSo, load = dAgh\n\nor A = 40000/(62.4*5*32) = 4.01 sq ft.
941617
The Specific Gravity of water is 1
255326
It has a volume of 12pi or 37.698 cm^3\n\nA cubic foot of water weighs 62.4 pounds\n\n1 foot is 30.48 cm.  1 cubic foot is 929 cubic cm.  That's 0.067 lbs. per cubic cm.  \n\n37.698 * 0.067 = 2.53 lbs.\n\nIt weighs slightly less than 2.53 lbs.
38778
Hard water isn't an exact term, so you can't be given an exact weight. The weight would depend on how much of various minerals have desolved into the water. The difference in weight would be very very small.\n\nDo you mean Heavy water? The answer would be pretty much the same, in either case...
86157
"water has the molecular formula H2O, indicating that there are two atoms of hydrogen and one atom of oxygen in a molecule of water. Rounded to three decimal places, the atomic weight of hydrogen is 1.008 amu and that of oxygen is 15.999 amu. The molecular weight of water is thus (2×1.008)+(1×15.999)=2.016+15.999=18.015 amu. Since atomic weights are average values, molecular weights are also average values. On the average, a molecule of ordinary water weighs 18.015 amu."
713171
No the molecules still weigh the same. With water the volume will increase, that's why ice floats. Most other substances decrease as they freeze.
929435
a drop of water weights  about  0.05 g \n\nThe molecular weight of water is 18 (H2 o = 2*1+16)\n\nso the number of moles of water in a drop is  0.05/18 =1.67 10^21 molecules
810641
Use Archimedes's buoyancy principal.  The weight outside represents the response of mass to the Earth's gravity.  The weight in water represents the displaced water's weight.  Use the ratio to get the answer.  HINT: if you convert to mass, the answer almost gives itself away.\nThe displaced water has a well known density.  That density will give the volume of the both the displaced water and the object displacing it.
1149664
An object sinks when it's weight exceeds the weight of the amount of water displaced by it's volume. The density of pure fresh water is 1kg/l. Assuming the the bottle must be completely full to contain 2l of water, a 2l bottle of water will weigh 2 kg and displace 2 kg. It will have neutral buoyancy. The bottle itself will displace more than it weighs, so the bottle will float.
518403
You make a container 16 cm by 3 cm (and 1 cm thick) and pour water inside. The weight of the water in gm is your answer.\n\nAnother method is to use Napier's Bones. Just sliding and matching the numbers.
970729
Looks like this is your homework. anyway, i'll only answer two of your questions.\n\n1. the density of water is almost 1 g/mL. and 1 liter = 1000 mL. hence the mass of 1 liter of water is 1000 g.\n\n2. since 1 liter of water is 1000 g or 1.00 kg, its weight is 1.00 * 9.8 = 9.80 N
1143801
yes 5 to 10 lbs. But it is all water.
1169465
We're accustomed to walking around in air. Water weighs more than air, so we feel lighter in it.
1004444
I ug is a 1billionth part of a cubic meter of water\n1m3 of water weighs 1000kg or 1,000,000,000 micro grams
261582
Of course, you would have to convert the English to Metric, but...\n\nObtain the volume (in cubic feet) of the water (i.e. Length times width times height)\nConvert cubic feet to gallons (i.e. 7.48 gallons/cubic foot)\nObtain the weight of the water (i.e. 8.34 pounds/gallon)