Question

calculate the number of moles in 1.8g of water​

Answer 1

Number of moles = given mass / gram molecular mass

So, number of moles in 1.8g of H2O

= 1.8/18

=0.1 moles.

Hope it helps you ^_^

Answer 2

Concept introduction:

A mole is $6.022 * 10^2^3$ of any chemical unit, including atoms, molecules, ions, and others. Due to the large number of atoms, molecules, or other components that make up any material, the mole is a useful measure to utilize.

Explanation:

Given that, $1.8g$ of water​.

We have to find, number of moles in $1.8g$ of water​.

According to the question,

Molar mass of water is $18g$.

∴ Number of moles in $1.8 g$ water is $1.8/18=0.1$moles.

Final Answer:

$0.1$ moles of water is present in $1.8g$ of water.

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