1. Given that 1 cal (about 4.2 J) of heat is lost by 1 g of water in cooling by 1oC, how much heat is lost by 4 g of water in cooling from 85oC to 25oC ?   16.8 J   252.0 J   1008.0 J   240.0 J   Hint Half-n-half Clue   2. The heat supplied by a bunsen-burner flame on burning 5 m3 of gas which has a calorific value of 25000 J/m3 is   5.0 kJ   125.0 kJ   5000.0 kJ   125000kJ   Half-n-half Clue   3. Which loses the most heat in cooling to 10oC ?   a kettle filled with water at 60oC   a glass filled with boiling water   a swimming pool filled with water at 30oC   Half-n-half Clue   4. Given that 1 cal (about 4.2 J) of heat is required to raise the temperature of 1 g of water by 1oC, how much heat is required to raise the temperature of 3 g of water by 8oC?   33.6 J   24.0 J   12.6 J   100.8 J   Half-n-half Clue   5. Given that 1 cal (about 4.2 J) of heat is required to raise the temperature of 1 g of water by 1oC, what will be the final temperature when 37.5 calories of heat are added to 3 g of water at 27oC ?   39.5oC   14.5oC   30.0oC   24.0oC   Half-n-half Clue   6. Water at 35oC is mixed with an equal mass of water at 70oC. If there are no heat losses to the surroundings, then what is the final temperature of the water mixture ?   35oC   52.5oC   105.0oC   70oC   Half-n-half Clue   7. If the temperature of a body is _______ that of its surroundings, it will lose heat to its surroundings.   equal to   lower than   higher than   Half-n-half Clue