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, 21.06.2019 22:30
Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l
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Chemistry, 22.06.2019 09:20
Explain that newton first law,second law and third law of motion?
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Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
Chemistry, 22.06.2019 21:00
What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays
Answers: 3
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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