Determine the number of molecules present in 4.56 moles of nitrogen (n2).

1 answer:

4 0

To calculate the number of molecules, we can simply use this rule:
number of molecules = number of moles x Avogadro's number

In this problem, we have:
number of moles = 4.56 moles
Avogadro's number is a constant = 6.02 x 10^23

Substituting in the above equation, we can calculate the number of molecules as follows:
number of molecules = 4.56 x 6.02 x 10^23
= 2.74512 x 10^24 molecules

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How many moles are 3.20 x102 formula units of calcium iodide?

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<h3>How to calculate number of moles?</h3>

The number of moles in the formula units of a substance is calculated by dividing the formula unit by Avogadro's number.

According to this question, 3.20 x 10² formula units are in calcium iodide. The number of moles is as follows:

no of moles = 3.20 x 10²² ÷ 6.02 × 10²³

no of moles = 0.53 × 10-¹

no of moles = 0.053 moles