Question

On a trip to Kruger, you heat 1.5 kg of water on a camping stove. The water is originally at 23 °C, and you heat it long enough to boil 0.65 kg of it away. A. How much heat went into increasing the temperature of the water? Units: J B. How much heat went into changing the phase of the water? Units: J C. In your camping stove, 50% of the energy released in burning the fuel goes into heating the water. How much fuel did you burn in the above process? Given: 1 gram of fuel releases 46 kJ of energy.

Answer 1

4200 J kic Specific heat of water - Latent heat of 2260 Vaporization KJ/kg. Heat Required to laise 1.5 kg + 4200+ (100-23) the temperature 485100 T 0.657 2260 Heat Required to sexse Convert 0.65 kg from water to steam 1469 KJ 1469x103 J 485.1kJ + 1469 kJ Total Heat Required 1954.1kJ - : fuel Required x too 1954. 1 46 50 84.90 gms