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To melt 8.5 grams of ice it takes 7.13 Joules of energy. How many kilograms of ice would be melted by 540 kilojoules of energy?
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8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
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What is the most common reason for matter changing its state?
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