Question

Calculate the number of moles for 18.066×10 raiseto the power 23 number of oxygen atoms

Answer 1

1 mole ➡️ 2×6.022×10²³ atoms

X mole ➡️ 18.066×10²³ atoms

X = 18.066×10²³/12.044×10²³

X = 1.5 mole.

Answer 2

The number of moles of Oxygen Atoms is 3.

Given:-

Number of Oxygen Atoms = 18.066 x 10²³

To Find:-

The number of moles of Oxygen Atoms.

Solution:-

We can easily calculate the number of moles of Oxygen Atoms by using these simple steps.

As

Number of Oxygen Atoms (N) = 18.066 x 10²³

Avagadro's Number (Na) = 6.02 x 10²³

The number of moles (n) =?

According to the formula,

$number \: of \: moles = \frac{number \: of \: oxygen \: atoms}{avagadro \: number}$

$n = \frac{N}{Na}$

On putting the values, we get

$n = \frac{18.066 \times {10}^{23} }{6.02 \times {10}^{23} }$

$n = \frac{18.66}{6.02}$

$n = 3$

Hence, The number of moles of Oxygen Atoms is 3.

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