When 200 mL of water in an electric kettle is heated from 20°C to 35°C to make a cup of tea, how much heat flows into the water?  Water density = 1.00 g/mL Specific Heat capacity of water = 4.18j/g degree

How many grams of coffee must evaporate from 700 g of coffee in a 190 g glass cup to cool the coffee and the cup from 95.0°C to 24.0°C? Assume the coffee has the same thermal properties as water and that the average heat of vaporization is 2,340 kJ/kg (560 cal/g). Neglect heat losses through processes other than evaporation, as well as the change in mass of the coffee as it cools. g Do the latter two assumptions cause your answer to be higher or lower than the true answer? O My answer is lower than the true answer because, if coffee loses heat in other ways and its mass decreases, it will need more evaporation for the same temperature drop. O My answer is higher than the true answer because, if coffee loses heat in other ways and its mass decreases, it will need less evaporation for the same temperature drop. O My answer is higher than the true answer because, if coffee loses heat in other ways and its mass decreases, it will need more evaporation for the same temperature drop. O My…

What quantity of joules of energy are needed to transform 11 kg of ice at 0.00°C to vapor at 155°C? Specific  heat of water is cwater = 4186 J/kg C° Specific  heat of steam is csteam = 2010 J/kg C° Latent  heat of fusion of water is Lfusion = 3.33 X 105 J/kg Latent  heat of vaporization of water is Lvaporization = 2.26 X 106 J/kg Boiling point of water = 100° C

A closed box is filled with dry ice at a temperature of -78.5 degreesC while the outside temperature is 21.0 degrees C the box is cubical measuring 0.4 m on a side and the thickness of the walls is 2.50 x 10^-2 m in one day 2.90 x 10^6 J of heat is conducted through the six walls find the thermal conductivity of the material from which the box is made