energy calculation practice unit 3. how much energy is required to heat 200 grams of water from...

ENERGY CALCULATION PRACTICE UNIT 3

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ENERGY CALCULATION PRACTICE

UNIT 3

• HOW MUCH ENERGY IS REQUIRED TO HEAT 200 GRAMS OF WATER FROM 25˚C TO 125˚C?

• HOW MUCH ENERGY IS RELEASED WHEN COOLING WATER FROM 30˚C AND FREEZING IT TO SOLID ICE?

• HOW MANY GRAMS OF WATER ARE VAPORIZED WHEN 7.3 X 104 J OF ENERGY ARE ABSORBED?

• HOW MUCH ENERGY IS REQUIRED TO HEAT 3.67 KILOGRAMS OF ICE FROM -7˚C TO 0˚C, MELT IT AND RAISE THE TEMPERATURE OF THE WATER TO 78˚C?

Page 4: ENERGY CALCULATION PRACTICE UNIT 3. HOW MUCH ENERGY IS REQUIRED TO HEAT 200 GRAMS OF WATER FROM 25˚C TO 125˚C? HOW MUCH ENERGY IS RELEASED WHEN COOLING

• WHAT IS THE INITIAL TEMPERATURE OF 175 GRAMS OF WATER THAT IS HEATED WITH 95,000 J OF ENERGY AND THE FINAL TEMPERATURE IS 85˚C?

Page 5: ENERGY CALCULATION PRACTICE UNIT 3. HOW MUCH ENERGY IS REQUIRED TO HEAT 200 GRAMS OF WATER FROM 25˚C TO 125˚C? HOW MUCH ENERGY IS RELEASED WHEN COOLING

• 375 GRAMS OF WATER VAPOR AT 133˚C IS COOLED. 1,250 KILOJOULES OF ENERGY IS RELEASED. WHAT IS THE FINAL TEMPERATURE OF THE WATER? WHAT STATE OF MATTER WILL IT BE IN?

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