how much heat is needed to raise the temperature of 10 kilograms of wood from 20 degrees celsius to 25 degrees celsius?
Use the equation: Q=mc(Tf-Ti) where m is mass, c is specific heat, and T is temperature.
First convert kilograms to grams, knowing that 1000 grams are in 1 kilogram:
10kg(1000g)= 10,000 grams
Now fill in the equation knowing that the specific heat of wood is generally considered .41 cal/ 1 gram degree celsius:
Q=20,500 cal or just 20.5 Cal
So your answer is that it takes 20.5 Cal to raise 10 kilograms of wood from 20 degrees to 25 degrees celsius