How much heat energy (in megajoules) is needed to convert 7 kilograms of ice at ?9?C to water at 0?C?? A. 2.48 MJ B. 3
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Question
Question 1
1. How much heat energy (in megajoules) is needed to convert 7 kilograms of ice at –9°C to water at 0°C?
Question 2
2. A mass of gas under constant pressure occupies a volume of 0.5 m3 at a temperature of 20°C. Using the formula for cubic expansion, what will be the volume at a temperature of 45°C without a change in pressure?
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