how much does 488 cc's of water weigh?
82543
I think 1 gram is equal to one cc. So 488cc's would weigh 488 grams. I'm not sure about this, so please look it up in a chem book.
974334
8.34 Lbs/ Gal (waters weight)and\n128 oz = 1 gal so...\n8.34x32/128=  \n2.085 lbs for a 32 oz bottle of water
1150383
1 cm3 of water equals 1 gram of water.\n1 gram of water equals 0.001 kilograms of water\nThus 455 cm3 = 0.455 kg (unlike the first answer you got)
373349
Volume = 1/48 * 1*1 = 1/48 cu ft\ndensity = 480 pounds per cu ft\n\nmass = density*volume = 480* 1/48 lb = 10 lb
4397
Well, it weighs nothing if your in the pool and you are floating, you will not be able to weigh yourself, this is because in the water your density is such that your weight is canceled out.\nA clouds mass on the other hand is dependant on the size of the cloud.
184965
The density of the human body is very near the density of water.  Personally, I float when my lungs are full and I sink when I exhale.  I think that water's density of 1000 kg/m3 is a good estimate of my density.\n\nI weigh about 75 kg (take your weight in pounds divided by 2.2)\n\nSo this means my volume is 75kg/(1000kg/m3) = 0.075 cubic meters.
769441
You cannot convert gallons into pounds per cubic foot because gallons are a volume and pounds per cubic feet is a density.\n\nWater weighs 8.33 pounds per gallon.  \nSo 425 gallons will weigh 3540 pounds.  \n\nThere are 7.48 gallons in a cubic foot.  So 425 gallons is about 56.8 cubic feet.
644935
there an equation H= mass ( in kg)* 4.2 (for water) change in temp ( in degree ~C)\n\nso \n\nH = 40*4.2* 20\n\n\ni think its 3360 J\n\n\nthe guy above is correct except the mass is kg to cancle the Cp units of  J / kg C
482773
12.59 centimeters = 0.413057743 feet\n\ntype in cm to ft at google for this, or any other conversions.
820473
Carbon dioxide is not weightless\nIn fact is has \n\n12g in carbon, and in oxygen it has 12, but as there is 2 carbon atoms there is 16g in oxygen\n\nSo 12+16*2 = 44g.\n\nHow do i know this? Look at the periodic table.
1143445
Water has a density maxima at 4C
1066738
Water is 62.4 lbs/cu ft, so it's 1684.8 lbs/cu yd.
708850
Water weighs 8.34 pounds per gallon\n\n1 cubic feet of volume holds 7.5 gallons of water\n\nfind the cubic feet volume of the tank (LxWxH) which is 30 \n\nthen multipy the cubic feet by the 7.5 which is 225 pounds.  Pretty heavy huh:)
815144
64 grams... multiply 88 grams by the ratio of molar masses of O2 to CO2 to get  the result
1141302
The molecular mass of water is 18.0153 g/mol, and the density of water is\n997.07 g/L at 25 C.  That makes\n\n(997.07 g/L)(mol/18.0153 g) =  55.346 mol/L.
865811
30.5 m of water.\n\nConvert units to desired units.\n\n1 atm is 14.?? psi is about 32 ft of water.\n\nLook in reference for more detailed unit conversions.\n\nOr use P= &#92;rho g H.
203341
One gallon of water, at 20 degrees Celsius, weighs 8.33 pounds