How many calories are required to change the temperature of 25.5 g of iron from 22.5 oC to 83.2 oC? (Note: Specific Heat of Iron is 0.450 J/g oC) A) 1550 cal B) 166 cal C) 550.0 cal D) 200 cal

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Mixing 50 ml of HCI ( 2.0 M) with 50 ml of NaOH ( 2.0 M ) raises the temperature of the calorimeter from 23.0 C to 31.0 C. What is the heat of reaction per mol of HCI ? 40.3 KJ/mol 32.2 KJ/mol O 38.4 KJ/mol 33.5 KJ/mol

Ethyl alcohol, C2H5OH, has a specific heat of 2.40 ?? °?. Which of the following statements best describes what this means? a) It takes 1 joule of energy to increase the temperature of 1 gram of ethyl alcohol by 2.40 °C. b) It takes 1 joule of energy to increase the temperature of 2.40 grams of ethyl alcohol by 1 °C. c) It takes 2.40 joules of energy to increase the temperature of 1 gram of ethyl alcohol by 1 °C. d) It takes 2.40 joules of energy to increase the temperature of 2.40 grams of ethyl alcohol by 1 °C

A sample of 175°C copper is placed into a beaker with 100 grams of 25°C water. Which sample of copper will heat the water to the lowest final temperature? The specific heat of copper is 0.385 J-g-1.°C-1. The specific heat of water is 4.184 J·g-1.°C-1. A. 5.0 g Cu B. 2.0 g Cu C. 0.5 g Cu D. 1.0 g Cu

What is the kinetic energy of a 4.15x10 kilogram golf ball moving at a velocity of 44.3 meters per second? (KE =½m v) Joules

What will be the final temperature when a 25.0 g block of aluminum (initially at 25 °C) absorbs 10.0 kJ of heat? The specific heat of Al is 0.900 J/g· degrees C.