The answer will depend on how much water - a drop, a cupful, a bucketful, a whole lakeful or WHAT!
4,5 grams
This is (mass of solute) divided by (mass of total solution) expressed as a percentage. The solute is what you are dissolving into the solution. Example: you have 90 grams of water, and you add 10 grams of salt (sodium chloride). The water is the solvent, sodium chloride is the solute, and the solution is salt water. 90 grams + 10 grams = 100 grams (mass of total solution). (10 grams) / (100 grams) = 0.1 --> 10% mass mass percent concentration.
grams which unit would you use to measure the mass of a mouse
27 grams.
500 cubic centimetres of water weighs 500 grams
it would be the same
Assuming the density of water is 1 g/mL, the mass of the water bottle would be 700 grams. If the density is different, you would need to know the specific density of the material the water bottle is made of to calculate its mass.
45mL of plain water has a mass of about 45 grams.
At standard temperature and pressure, ml = grams for water, so at STP, 134.63 ml of water = 134.63 grams.
The prefix "kilo-" means 1000, so 2.5 kilograms would be 2.5 x (1000 grams), or 2,500 grams.
Somehow your data doesn't add up. The mass difference would be 195 - 125 = 70 grams. 1 ml of water weighs roughly 1 gram, so you would expect 70 ml of water to be filled into the beaker. Your water is either contaminated, extremely heavy or its a trick question.
500 grams
The answer depends on the temperature, but at room temperature (20 deg C), 100 ml of water would have a mass of 99.82 grams.
45 grams, since the atomic mass of water is 18g.18 * 2.5 = 45
1,000 Grams
specific gravity of 4 4 times the mass of water, which at 50ml would weigh 50 grams.
1 ml = 1g of water so 25ml would weight 25 grams