The specific heat capacity of benzene (C6H6) is 1.74J/g.K. How much energy is required to heat 168g of copper from -12.2oC to +25.6oC

10 A student heats 84.17 mL of water to 95.27°C using a hot plate. The heated water is added to a calorimeter containing 73.92 mL of cold water. The water temperature in the calorimeter rises from 2.15°C to 37.48°C. The specific heat capacity of water is 4.184 J and the density of water is g. °C 1.00 mL Assuming that heat was transferred from the hot water to the cold water and the calorimeter, determine the heat capacity of the calorimeter. J Heat capacity of calorimeter = °C

Iron has a specific heat capacity of 0.444J/g-C. 50.0 g of iron at 35C is added to 50.0 g of water with a specific heat capacity of 4.184 J/g-C. When the temperature of the resulting mixture stops changing, the temperature is closer to that of the original water than to the iron. True or false?

1. How many joules of energy would be required to raise the temperature of 3.2 grams of mercury 4.2°C? The specific heat of mercury is 0.14 J/(g.°C).

A 9.323 g sample of metal at 99.15 °C was placed in a calorimeter containing 35.5 g of water 19.42 °C. The temperature of the water in the calorimeter rose to 22.67 °C. What is the speci heat of the metal? (s of water is 4.184 J/(g °C))

25.00 mL of 0.200 M sulfuric acid was added to 25.00 mL of 0.200 M NAOH, in a constant volume calorimeter. The density of the resulting solution is 1.225 g/mL and its specific heat is 5.321 J/g-°C. As the reaction took place, the temperature of the solution rose from 22.0 °C to 31.3 °C. What is AH (in units of kJ/mol) for the reaction, per mole of water formed? This is a limiting reactant problem and your choice of limiting reactant must be justified through stoichiometric calculations. 21.

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 chemist carefully measures the amount of heat needed to raise the temperature of a 0.34 kg sample of C,H¸0 from -1.5 °C to 18.1 °C. The experiment shows that 1.09 × 10* J of heat are needed. What can the chemist report for the molar heat capacity of C,H,O? Round your answer to 2 significant digits. J• mol -1 1 ·K x10

A student reacts 2.0 moles A and 4.0 moles of B in an insulated container. The reaction takes place in water (50.0 g), in a coffee cup. The water gains heat, raising its temperature 23.6°C (AT). Water has a specific heat capacity of 4.184 J/g C. A + 2B 3 C AHRXN = ? 1 a. Energy is absorbed by the water. What is qWATER? b. Energy is released by the reaction. What is qRXN? (this one is easy) c. How much heat per mol of A (or per 2 mol of B), by the reaction (AHRXN)? d. In another reaction, a student reacts 15.2 moles of B with excess A. What is the heat that comes out of his second reaction (qRXN-2)? use dimensional analysis +