How many grams of water are made up of 7.25x10^24 molecules of water?

The number of molecules of water in 7.25 x 10^24 molecules is a very large number, and it is difficult to give the mass in grams without knowing the molecular weight of water. However, the molecular weight of water is approximately 18.015 grams per mole, so if you divide the number of moles of water by the molecular weight of water, you will get the mass in grams.

To do this calculation, you can use the following formula:

mass (g) = (number of moles) x (molecular weight of water)

Plugging in the values, you get:

mass (g) = (7.25 x 10^24 molecules) / (6.022 x 10^23 molecules/mole) x (18.015 g/mole)

This works out to about 130 grams of water.