Heat Problems 1.Using calories, calculate how much heat 32.0 g of water absorbs when it is heated from 25.0 o C to 80.0 o C. How many joules is this?

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Presentation transcript:

Heat Problems 1.Using calories, calculate how much heat 32.0 g of water absorbs when it is heated from 25.0 o C to 80.0 o C. How many joules is this?

2. A chunk of silver has a heat capacity of 42.8 cal/ o C and has a mass of 181 g. Calculate the specific heat of silver.

3. How many kilojoules of heat are absorbed when 1.00 L of water is heated from 18 o C to 85 o C?

4. A small pebble is heated and placed in a foam cup calorimeter containing 25.0 mL of water at 25.0 o C. The water reaches a maximum temperature of 26.4 o C. How many joules of heat were released by the pebble?

5. When 50.0 mL of water containing 0.50 mol of HCl at 22.5 o C is mixed with 50.0 mL of water containing 0.50 mol NaOH at 22.5 o C in a calorimeter, the temperature of the solution increases to 26.0 o C. How much heat (in kJ) was released by this reaction?