Help me please!! A tratar of Water (20°C) is placed in the freezer and turns into ice cubes (-8 °C)
- IN to the system
- OUT the system
- No energy is flowing

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.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory