Which contains more molecules of water. 5 liters of ice at 0 degrees Celsius or 5 liters of water at 0 degrees Celsius?

5 grams of water will have more water molecules since ice had 1.67 x molecules and 5 gm ice had 1.53 x 10 molecules of water.

Explanation:

5 liters of water at 0 degrees or 273.15 K will have, Formula used is:

number of water molecules = x Avagadro number

Avagadro number = 6.022 X 10 ^23 molecules or atoms in 1 mole

atomic mass of 1 mole water = 18.01 grams/mole

putting the value in the equation:

number of molecules = x 6.022 x 10^23

number of molecule of water in water =  1.67 X molecules.

5 gm cm^3 of ice will have

The density of ice = 0.917 gm/cm^3

volume = density x mass

number of moles of water = x Avagadro number

putting the values,

number of moles in ice = X 6.022 X 10^23

                                       = 1.53 X molecules of water

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.