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A tank of compressed helium is used to inflate balloons for sale at a carnival on a day when the atmospheric pressure is 0.99 atm. If each balloon is inflated from an initial volume of 0.0L to a final volume of 4.75 L how much work is done on the surrounding atmosphere by 166 balloons when they are inflated. The atmospheric pressure remains constant during the filling process. (enter your answer with 1 decimal place, do not include units in your answer. It is not necessary to include a + sign, however if your answer is negative please include a - sign) Between periods of a hockey game a Zamboni spreads 8.55 L of water across the surface of a hockey rink. To freeze this volume of water at 0C what is the value of AHsys? The density of water is 1.00g/mL. (Enter only your numeric answer with 1 decimal place - do not include units but make sure your final answer is calculated in units of kJ. It is not necessary to include a + sign, however if your answer is negative please include a - sign)