Question

The molecular weight of water, H2O is 18.02 g/mol. How many moles of water are in 24.3 g of water?

Answer 1

1.35moles

Step-by-step explanation:

mm=18.02gmol⁻¹ mass=24.3g

mole=mass/mm

mole=24.3/18.02

mole=1.35moles

Answer 2

The answer is 1.35 moles

Step-by-step explanation:

To find the number of moles given the molecular weight and mass we use the formula

`n = (M)/(m) \\`

where

n is the number of moles

M is the molar mass

m is the mass of the substance

From the question

m = 24.3 g

M = 18.02 g/mol

We have

`n = (24.3)/(18.02) \\ = 1.348501664...`

We have the final answer as

1.35 moles

Hope this helps you