Question

calculate the mass of 10 moles of water. (H2o)

Answer 1

MOLECULAR MASS OF H2O IS
1×2+16×1=2+16=18g [Atomic number ×Number of atoms].
Number of moles=Mass/Molecular Mass.
n=m/M.
10=m/18.
Therefore,Mass of 10 moles of water =10×18=180 g.
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Answer 2

Answer:

Explanation:

The mass of $10$ moles of water $(H_{2}O )$ is  $180g$ .

The molecular mass of $(H_{2}O )$ will be the product of atomic number and atoms number :

$1 \times 2+16 \times 1=2+16=18 \mathrm{~g}$ [Atomic number ×Number of atoms].

Water weighs $18 g$ per mole.

As we know the formula that The number of moles=Mass(m)/Molecular Mass(M).

By using the above formula, We can write $10=\frac{m}{18}$ .

Therefore, The mass of $10$ moles of water (m) is $10 \times 18=180 \mathrm{~g}$ .

The final answer is $180 \mathrm{~g}$ .