77. Calculate the amount of heat required to heat a 45-kg sample of ethanol from 11.0 °C to 19.0 °C. 79. If 89 J of heat are added to a pure gold coin with a mass of 12 g, what is its temperature change? 81. An iron nail with a mass of 12 g absorbs 15 J of heat. If the nail was initially at 28 °C, what is its final temperature?

Match these words with their definition. Thermal energy [ [ Choose ] kinetic energy [ [ Choose ] potential energy [ [ Choose ] >

5. heat

Constants I Periodic Table Part A How much heat must be absorbed by a 13.0 g sample of water to raise its temperature from 13.0 C to 40.0°C? (For water, C, = 4.18J/g C) Express your answer to three significant figures and include the appropriate units. Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 29 attempts remaining Provide Feedback acer

If the energy in a serving of food can heat up 450,000 g of water 1 degrees C how many calories are in a serving?

Use the following information to answer the next question. Canada is the third largest copper producer in the world. Indigenous people of Canada used copper to manufacture tools, jewellery and ornaments. Current uses of copper include electrical wire, roofing, plumbing and industrial machinery. If 35.0 kJ of thermal energy is added to a 2.50 kg sample of copper, the temperature change is calculated to be °℃ Record your 3-digit answer; do not include units Use the following information to answer the next question. Splenda™ is a mixture of dextrose, added for flavour, maltodextrin, to add volume, and sucralose, added to increase sweetness. A sample of dextrose is burned in a calorimeter that contains 250.0 g of water. The temperature of the water increases by 4.56°C. Given this information, the thermal energy absorbed by the water is calculated to be kJ. (Use 4.19 Joules per gram per degree C as the specific heat capacity for water). Record your 3-digit answer; do not include sign or…

Copper wires used to transport electrical current heat up because of the resistance in the wire. If a 136-g wire gains 251 J of heat, what is the change in temperature of the wire? Copper has a specific heat of 0.384 Jg-l °C-1. Change in temperature =| °C

Which one of the following is a unit of energy?A) exajoule B) bushel C) Volt D) millitorr E) Ampere