How many chlorine particles are in 4.5 moles in sig figs

2.71×10²⁴ particles

Explanation:

Applying Avogadro's constant

Avogadro's constant states that, The number of specified particles contained in a mole of a substance is equal to 6.02×10²³.

From the question,

If one mole of chlorine contains a particle of  6.02×10²³,

Therefore,

4.5 moles of chlorine will contain a particle of (4.5× 6.02×10²³)

⇒ 27.09×10²³

Hence the number of particle contained in 4.5 moles of chlorine ≈ 2.71×10²⁴ particles

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