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i. 1,350 calories

j. 992 calories

k. 235.6 calories

2. Calories of energy into water = (amount of water, in grams) x (change in the water's temperature, in °C)

3.a. 840 calories

3.b. 840 calories

4. 80°C

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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