What is the total amount of heat required to change 15.75g of H20(s) to H2O(l) at STP?

1) 5,261 J
2) 452,000 J
3) 65.8 J
4) 35,595 J

2. how is heavy water different from normal water

In apex! a liquid heated beyond a certain temperature becomes

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.