If a liter of water is heated from 20 degrees celsius to 50 degrees celsius, what happenes to its volume? a. the volume increases
b. the volume decreases
c. the volume first decreases, then increases
d. the volume first increases then decreases.

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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.

The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.