- The number of moles that are in 5.77 grams of calcium is ([tex]8.677*10^{22}[/tex])
- From periodic table, Avogadro's number of atom of calcium has a mass approximately ( 40.1 g)
Given:
- Mass of calcium= 5.77 grams
- Number of calcium atom = [tex]\frac{5.77g}{40.1g}[/tex] × ( Avogadro's number)
(Avogadro's number= 6.022 × 10^23 mol[tex]^{-1}[/tex]
Number of calcium atom= [tex]\frac{5.77g}{40.01g}[/tex]× 6.022 × [tex]10^{23}[/tex] [tex]mol^{-1}[/tex]
= 8.677× 6.022 [tex]10^{22}[/tex]
Therefore, number of moles that are in 5.77 grams of calcium is (8.677 × 10^22)
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