1) Iron has a specific heat capacity of 450J/kg'C. A blacksmith heats a 2kg iron sword up by 100'C how much energy does he use a) 80,000J b) 90,000 J c) 70,000J 2) Water has a specific heat capacity of 4200J/kg'C. A saucepan heats up 2.5kg of water from 25'C to 40'C. How much energy was used? a) 157,500J b) 150,200J c) 151,000J 3) A glass contains 500g of water left in the sun it heats up from 20'C to 40'C. How much energy did it absorb from the sun? a) 41,000J b) 40,000J c) 42,000J 4) Vegetable oil has a specific heat capacity of 1700J/kg'C. 1.8kg of it is heated from 15'C to 185'C. How much energy was used? a) 150,300J b) 320,100J c) 520,200J 5) 2.5kg of oil and 2.5kg of water are both heated by 100'C. How much more energy does it take to heat the water than the oil? a) 625,000J b) 725,000J c) 600,000J

Specific heat capacity equation

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