Question

Number of electron in 1.8mL of H2o(l) is about

Answer 1

1mole=18grams..1.8Gm
1.8gm=1 mile
now we know that 10 electron in 1 H2O molecule hence in 1.8ml it's=
6.023*10^23*.1*10=6.023*10^23electron
Hope my answer will help you

Answer 2

Answer:

The number of electrons in 1.8mL of $H_{2} O$ is $6.023 \times 10^{23}$

Explanation:

Number of moles $\bold{=\frac{\text {Given Mass}}{\text {MolarMass}}}$

We know that the quantity of water given is 1.8 ml which contains a molar mass of water is 18.

So the number of moles of water= 1.8÷18=0.1

The number of electrons in 1 atom of water= 10

1 mole of water or 1 atom of water= $6.023 \times 10^{23}$

So, there are $6.023 \times 10^{23}$ electrons in 1 mole of water

The number of electrons contained 1.8 ml of water or 0.1 mole of water= $\bold{0.1 \times 10 \times 6.023 \times 10^{23}=6.023 \times 10^{23}}$ electrons