Chemistry, 25.01.2021 23:30 daniellacalles
Dispersal of matter and energy can be directly related to spontaneity if the: Select the correct answer below
a. change in internal energy is positive
b. change in internal energy is negative
c. change in internal energy is zero
d. there are no conditions for this correlation
Answers: 2
Chemistry, 21.06.2019 23:00
Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as
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Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)
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Chemistry, 22.06.2019 16:30
Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?
Answers: 2
Chemistry, 22.06.2019 17:10
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
Dispersal of matter and energy can be directly related to spontaneity if the: Select the correct ans...
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