Question

Here, 1 mole of water molecule has:

Answer 1

There is no specific parameter mentioned, so we can tell the types of elements present in the water molecule, number of molecules present in 1 mole of water, a mass of 1 mole of a water molecule.

Complete answer:
When we want to calculate the amount of any substance in chemistry, we first calculate the mole of the substance because it can be helpful in finding the other values. As a result, the given value of a mole of water in the question is 1.There is no specific parameter mentioned, so we can tell the types of elements present in the water molecule, the number of molecules present in 1 mole of water, the mass of 1 mole of a water molecule.
We know that the water molecule is composed of two elements, i.e., hydrogen element and oxygen element. In one mole of water, there are two atoms of hydrogen element and one element of oxygen. The formula is ${{H}_{2}}O$.
As we know that one mole, any substance contains $6.022\text{ x 1}{{\text{0}}^{23}}$ atoms or molecules. If the substance is in atomic form then it will be $6.022\text{ x 1}{{\text{0}}^{23}}$ atoms and if the substance is in molecular form then it will be $6.022\text{ x 1}{{\text{0}}^{23}}$ molecules. So, 1 mole of water will have $6.022\text{ x 1}{{\text{0}}^{23}}$ molecules of water.
In gram form, we know that the atomic mass of hydrogen is 1 and the atomic mass of oxygen is 16. So, the molecular mass of water is 18 grams/ mol. Therefore, one mole of water has 18 grams of water.

Note:
If the substance is given in gaseous form then we can calculate the volume of a given mole of the given gas, as, at standard temperature and pressure (STP), the volume of 1 mole of gas is 22.4 liters.