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

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current