A sample of mercury at 14.0°C is warmed to 128.0°C when 795 cal of heat is added. What is the mass of the mercury? (cmercury = 0.035 kcal/kg°C)

3. _Ba(OH)2(e) + heat

A)   An iron nail with a mass of 12 gg absorbs 15 J of heat. If the nail was initially at 30 ∘C, what is its final temperature? Express your answer using two significant figures. B) When 47.1 J of heat is added to 13.8 g of a liquid, its temperature rises by 1.74 ∘C. What is the heat capacity of the liquid?

Perform the conversions between energy units. 588 kJ = J 3425 kcal = kJ 8.97 x 106 J = kcal FEB 23

A 2 gram peanut is burned to heat water. The peanut has 6.5 kcal/gram. The water heats from 15C to 80C and the calorimeter is 57% efficient. What is the mass of water heated?

When 26.6 g of potassium chloride dissolves in 300.0g of water, the temperature drops from 26.1 degrees Celcius to 11.7 degrees C. The Ccal of the calorimeter is 22.0 J/(degrees C). Write an equation for solid potassium chloride dissociating into ions when it dissolves in water.

6) A block of rhenium metal (specific heat =0.0329 cal/ gC) is heated to 88.2C and then dropped into 100.0 g of water initially at 26.4 C. The final temperature of the mixture is 32.4C. What was the mass of the block of rhenium?

when 20 grams of salt is dissolved in 95 grams of water, the temperature of the solution decreases from 40 celsius to 0 celsius. how much heat is absorbed? the specific heat solution is 1.1 cal/g celsius

A 40 g sample of water is raised 10 celcius, with water having a specific heat of 4.184 J/g*C, what amount of heat will  be produced?   Given H2O (g) + H2(g) + 10 kcal  Find the amount of heat realesed by burning 2.0 moles of CO.