Question

Determine the number of hydrogen atoms in 1.5 moles of water,H2O molecules.

Answer 1

H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the letter O. Water is chemical substance with no smell, taste or color.

Answer 2

Answer:

$1.806 \times 10^{24}$ atoms

Explanation:

We know that $1$ mole of a substance contains $6.02 \times 10^{23}$ of its particles.

Therefore, $1.5$ moles of $H_{2}O$ will have = $1.5 \times 6.02 \times 10^{23} = 9.03 \times 10^{23}$ $H_{2}O$ molecules.

One molecule of $H_{2} O$ has $2$ hydrogen atoms.

The total number of hydrogen atoms = $2 \times 9.03 \times 10^{23}$ = $18.06 \times 10^{23}$

= $1.806 \times 10^{24}$ atoms.

Hence, the total number of hydrogen atoms in $1.5$ moles of $H_{2}O$ molecules is $1.806 \times 10^{24}$.

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