Conversions, Specific Heat, and Thermochemistry

A negative (-) sign in a chemical reaction represents an...

A positive sign (+) in a chemical reaction means...

Determine the final temperature when a 25.0g piece of iron at 85.0°C is placed into 75.0grams of water at 20.0°C. The specific heat of iron is 0.450 J/g°C. The specific heat of water is 4.18 J/g°C.

What mass of water can be heated from 25.0° C to 50.0° C by the addition of
2825 J? The specific heat of water is 4.18 J/gC

Convert 850 cal into joules

Convert 0.00378 kg into grams

Calculate the H value heat for the following reaction:
Fe2O3(s) + 3CO(g) --> 2Fe(s) + 3CO2(g) H = ? kJ/mol
Solve by writing formation equations for each reactant and product and using the H values for each. Table is found on the board.

Convert 4.71 kcal into kilojoules

When heat is absorbed into a system, it is called...

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22ºC to 55ºC, if the specific heat of aluminum is 0.90 J/gºC?

444 joules into calories

Calculate the amount of heat needed to increase the temperature of 250g of water from 20C to 46C. Check to see if you need to convert anything, the answer must be in joules!!! (The specific heat of water is 4.18J/gC)

When heat is released, it is called...

Convert 1.8 kJ into joules

How much heat is required to raise the temperature of 250.0 g of mercury by 52°C? (Make sure to convert grams to kilograms) The specific heat of mercury is .140J/gC

______________ is the capacity to do work or supply heat

When 435 J of heat is added to 3.4 g of olive oil at 21°C, the temperature increases to 85°C. What is the specific heat of the olive oil?