A client wants to know how well their refrigerator is operating. You placed 2.15kg of water at 21.5 degrees Celsius into the refrigerator’s freezing compartment. You measure that it takes 2 hours to freeze all the water into ice at its freezing point. Calculate at what rate (in joules per second) the refrigerator is removing heat from the freezer compartment.

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.