If the farmer were to use dry firewood with an average energy density of 16 MJ/kg, how many kilograms of wood would the farmer need to use to raise the water in the drum by the same amount as in (b)?

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution