Question

How many water molecules are in a block of ice containing 1.75 mol of water (H20)?Express the number of molecules numerically.

Answer 1

1.0535 * 10²⁴ molecules

Explanations:

Given the following parameters

Moles of water = 1.75 moles

According to Avogadro's constant:

1 mole = 6.02 * 10²³molecules

The number of molecules of water in 1.75 mol of water is calculated as:

`\begin{gathered} \text{molecules of water=1.75}*6.02*10^(23)molecules \\ \text{molecules of water}=10.535*10^(23)molecules \\ \text{molecules of water}=1.0535*10^(24)molecules \end{gathered}`

Hence the number of water molecules in 1.75 moles of water is 1.0535 * 10²⁴ molecules