Question

What is the mass of 6.80 moles h2o

Answer 1

6.80mol x (18.02g/1mol) = 122.5g

You multiply the 6.80mol of H2O w/ the molar mass of water to find the mass.
The moles will cancel out with each other, resulting in the mass (g).

Answer 2

Step-by-step explanation:

Number of moles is defined as mass divided by molar mass.

Mathematically, No. of moles =
`(mass)/(molar mass)`

It is given that there are 6.80 moles and it is known that molar mass of water is 18 g/mol.

Therefore, calculate mass as follows.

No. of moles =
`(mass)/(molar mass)`

6.80 mol =
`(mass)/(18 g/mol)`

mass = 122.4 g

Thus, we can conclude that mass of 6.80 moles
`H_(2)O` is 122.4 g.