Calorimetry Quiz

A fast food item contains 756 nutritional Calories.  Convert this energy to kilocalories.

• 7.56 kilocalories
• 0.0756 kilocalories
• 0.756 kilocalories
• 756 kilocalories

An exothermic reaction releases 325 000 Calories.  Convert this energy to kJ.

• 1500 kJ
• 1200 kJ
• 1000 kJ
• 1357 kJ

1. How much heat is required to raise the temperature of 250.0 g of Platinum by 52°C?

• 1200 J
• 1733 J
• 2000 J
• 1500 J

1. How many kilojoules of heat are absorbed when 1000. g of water is heated from 14°C to 75°C?  

• 254.98 kJ
• 200.50 kJ
• 150.25 kJ
• 300.00 kJ

1. How much heat is absorbed by a 1500. kg granite boulder as energy from the sun causes its temperature to change from 10°C to 39°C?  (1 kg = 1000 g)

• 34455000 J
• 10000000 J
• 50000000 J
• 25000000 J

1. How many kilojoules of heat are lost by 2580 kg of  gold as it cools from 41.2°C to –12.9°C? 

 (1 kg = 1000 g)

• 18300 kJ
• 30000 kJ
• 22000 kJ
• 15000 kJ