7. How many grams of O2(g) are formed from the complete reaction of 27.2g of KClO3 ? KClO3(s)KCl(s)+O2(g) 8. Suppose you have a mixture of 1.25molMg and 1.00molO2 Mg(s)+O2(g)MgO(s) (a) Which reactant is the limiting reactant? (b) What is the theoretical yield (in grams) of MgOO ? 9. Calcium nitrate decomposes on heating, producing calcium oxide and gaseous nitrogen and oxygen. Write the balanced equation for this reaction. What is the coefficient on oxygen gas when this equation is balanced using the smallest whole-number coefficients? a) 1 b) 2 c) 3 d) 4 e) 5