Thermochemistry Review

What is the specific heat, c, (J/g·^oC) of a substance if 51 J of heat are required to raise the temperature of 1.7 grams of this substance from 20.5 ºC to 25.5 ºC? 

• - 433.5 J/g·^oC
• 6 J/g·^oC
• -6 J/g·^oC
• 433.5 J/g·^oC

 A 16.0 g sample of iron was heated from 0°C to 35.0°C. It absorbed 246.4 J of energy as heat. What is the specific heat of this piece of iron?

• 240 J/g°C
• 3.67 J/g°C
• 1.34 J/g°C
• 0.44 J/g°C

How much heat is required to raise the temperature of a sample of copper from 10.0°C to 55.0°C, if its specific heat is 0.384 J/g°C and its mass is 10.00 g?

• 16 J
• 139 J
• 173 J
• 359 J

How many grams of water would require 2200 joules of heat to raise its temperature from 34°C to 100°C?  The specific heat of water is 4.18 J/g∙C      

• .125 g
• 34,736 g
• 7.97 g 
• 1.99 g