Chemistry, 17.12.2019 01:31, Morganwing1019
How many grams of coffee must evaporate from 350 g of coffee in a 100-g glass cup to cool the coffee and the cup from 95.0°c to 45.0°c ? assume the coffee has the same thermal properties as water and that the average heat of vaporization is 2340 kj/kg (560 kcal/g). neglect heat losses through processes other than evaporation, as well as the change in mass of the coffee as it cools. do the latter two assumptions cause your answer to be higher or lower than the true answe
Answers: 2
Chemistry, 22.06.2019 16:30, jrfranckowiak
At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?
Answers: 1
Chemistry, 22.06.2019 18:50, cj31150631
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
How many grams of coffee must evaporate from 350 g of coffee in a 100-g glass cup to cool the coffee...
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