Calculate the number of miles from the given mass substance: A: 15.0grams of AI2s3
B:24.5grams if NaNO3

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

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.

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas