Answer:
115.95 g
Explanation:
The chemical reaction taking place is expressed as;
[tex]Ca(ClO_3)_2->CaCl_2+ 3O_2[/tex]
#Calculate the moles of calcium chlorate in the reaction given a molar mass of [tex]206.98 \ gmol^{-1}[/tex]:
[tex]Mass \ Ca(ClO_3)_2=\frac{250\ g}{206.98 \ gmol^{-1}}\\\\=1.2078 \ grams[/tex]
#The ratio of calcium chlorate to oxygen produced is 1:3.
[tex]O_2 \ Moles=1.2078\times 3\\\\=3.6234\ moles[/tex]
#The molar mass of oxygen is given as 32. We therefore calculate the mass produced as:
[tex]Mass \ O_2=Molar \ mass(O_2)\times \ moles\\\\=3.6234\times 32\\\\=115.95 \ g[/tex]
Hence, the mass of oxygen produced is 115.95 g
