The following chemical equation shows a reaction between aluminum and sulfuric acid to produce hydrogen ga 2Al + 3H2SO4 → Al2(SO4)3 + 3H
How many grams of aluminum must react with sulfuric acid to produce 2.6 L of hydrogen gas at STP?

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.