the-combustion-of-1-lb-of-dry-firewood-can-provide-an-amount-of-7-273x106-j-heat

Question

The combustion of 1.000 lb of dry firewood can provide an amount of 7.256×10⁶ J heat. If dry firewood is used in a boiler furnace, how many kilograms of dry firewood are needed to raise the temperature of 250.0 kg of water from 25.00°C to 100.0°C? Specific heat of water = 4.184 J/g•°C

Accepted Answer

4.903 kg

Answer

9.248 kg

Answer

2.439 kg

Answer

8.294 kg

The combustion of 1.000 lb of dry firewood can provide an amount of 7.256×106 J heat. If dry firewood is used in a boiler furnace, how many kilograms of dry firewood are needed to raise the temperature of 250.0 kg of water from 25.00°C to 100.0°C? Specific heat of water = 4.184 J/g•°C

The combustion of 1.000 lb of dry firewood can provide an amount of 7.256×10⁶ J heat. If dry firewood is used in a boiler furnace, how many kilograms of dry firewood are needed to raise the temperature of 250.0 kg of water from 25.00°C to 100.0°C? Specific heat of water = 4.184 J/g•°C