Question

A lab experiment calls for 3.00 moles of Calcium. How many particles of Calcium are required?

Answer 1

To calculate the calcium particles that are needed we must take into account Avogadro's number, this number tells us that in one mole of any substance there are 6.022x10^23 particles.

So if we have 3 moles of Calcium (Ca), we must multiply this value by 3 to obtain the number of particles of Ca, that is, we apply the following operation.

`\begin{gathered} \text{Particles of Calcium}=GivenmolCa*(6.022*10^(23)particlesCa)/(1molCa) \\ \text{Particles of Calcium}=3molCa*(6.022*10^(23)particlesCa)/(1molCa) \\ \text{Particles of Calcium}=1.81*10^(24)particlesCa \end{gathered}`

To have 3.00 moles of Calcium will be required 1.81x10^24particles of Calcium