Composition = aluminum Density = 2.70 g/cm3 Volume = 196 cm Composition = silver Density = 10.49 g/cm3 Volume = 196 cm3 %3D

2. A small immersion heater was used to heat water in an insulated cup. The heater was placed in 100.0 g of distilled water initially at 21.0°C, and turned on for 60.0 seconds while the water was stirred with a thermometer. The final temperature of the water was measured to be 37.5°C. Assume the specific heat capacity of the water is 4.18 J/g °C. (a) Calculate the total heat energy in joules absorbed by the water and the average power in watts (1 watt = 1 joule/s) delivered by the heater. The heater was used to deliver 3000 joules of energy to 100.0 g of methanol (CH,OH(E)) in the same manner. The temperature of the methanol increased by 11.8 Celsius degrees. (b) Calculate the specific heat capacity of the methanol liquid. (c) (i) Calculate the mass of water (H,O, Co= 4.181 Jgl °C-) at 20.0°C that would be requireć %3D to cool a 30.0-g block of copper (Cu, co0.385 J gl °C-l) from 50.0°C to 25.0°C in an insulated cup. %3D (ii) Which liquid, water or methanol, would be more effective as…

A sample of sand initially at 2.24E1 °C absorbs 1.357E3 J of heat. The final temperature of the sand is 6.7E1 °C. What is the mass (in g) of sand in the sample? The heat capacity of sand is 0.84 Jg^{-1} °C^{-1}.

2. In studying the energy generated by a person, you may view the person roughly as a constant pressur calorimeter using sugar (i.e., sucrose, C₁2H₂2O11) to generate power. The reaction of table sugar in calorimeter is given by + Ch. 9 Sl....pdf C12H22O11(s)+120₂(g) →12CO₂(g)+11H₂O+heat. C. a. What is the heat released by consuming one mole of sugar (C₁2H22O11) in this b. Calculate the enthalpy of combustion per sugar utilization. mole Does the result of your calculation make I wi (540 Karak 14 11 M de 2009 1 AP fik Tour of 1 way? 20