Question

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Answer 1

The number of particles of calcium is 3.79 x 10^23 particles

Explanation

Given information

The mole of calcium = 0.630 moles

Let x represents the number of particles

The next step is to find the number of particles using the below formula

`\text{Number of moles = }\frac{\text{ }Number\text{ of particles}}{\text{Avogadro's number}}`

Recall that, Avogadro's number is 6.022 x 10^23

`\begin{gathered} 0.630\text{ = }(x)/(6.022*10^(23)) \\ \text{cross multiply} \\ x\text{ = 0.630 }*\text{ 6.022}*10^(23) \\ x\text{ = 0.630 }*\text{ 6.022 }*10^(23) \\ x\text{ = 3.79 }*10^(23)\text{particles} \end{gathered}`

Therefore, the number of particles of calcium is 3.79 x 10^23 particles