Webb A. Sign wants his home to feel cozy during the party. He decides to burn lo

Question

Webb A. Sign wants his home to feel cozy during the party. He decides to burn logs in his fireplace to heat his house. For simplicity, let's treat each 2.5 kg log as being entirely cellulose (actually 40-50%), which releases 13.1 kJ/g heat when combusted. If the insulation in his house allows 1.1 105 kJ/hr heat to escape, how many logs per hour will he need to burn? (Round your answer to the nearest whole number.) ___________logs per hour Will 12 logs be enough to keep the fire burning for four hours? es, everyone will be toasty. or No, the guests had better keep their mittens on.

Explanation / Answer

for 1 hour 1.1E5 =2.5E3*13.1*N N=3.35 logs so 3 logs per hour No guests will need their mittens since he would need 3.3*4=13 logs

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