Answer : The number of grams of calcium perchlorate is, 0.00253 grams.
Explanation :
Molar mass of calcium perchlorate = 238.9 g/mol
As, [tex]6.022\times 10^{23}[/tex] formula units present in 238.9 g of calcium perchlorate
So, [tex]6.37\times 10^{18}[/tex] formula units present in [tex]\frac{6.37\times 10^{18}}{6.022\times 10^{23}}\times 238.9=0.00253g[/tex] of calcium perchlorate
Therefore, the number of grams of calcium perchlorate is, 0.00253 grams.
