38.4 grams of Barium Oxide are used in the presence of excess sulfuric acid, how many grams of Barlum Sulfate are produced (see balanced reaction below)? You will need to use scratch paper to solve this problem,
1BaO (6) + 1H2SO4 (aq) #1BaSO4 (3) +1H2O (g)

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Answer explain why it is not possible to deduce a complete order of reactivity.

Which terms are used to identify pure substances