The observed regularities in the properties of the elements are periodic functions of their
(...
Chemistry, 17.03.2020 01:00 chelseayazzie16
The observed regularities in the properties of the elements are periodic functions of their
(1) atomic number
(2) mass number
(3) oxidation states
(4) nonvalence electrons
Answers: 2
Chemistry, 22.06.2019 12:30
Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
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
Chemistry, 22.06.2019 18:10
Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.
Answers: 3
English, 17.05.2021 21:50
Mathematics, 17.05.2021 21:50
Mathematics, 17.05.2021 21:50
Biology, 17.05.2021 21:50
Geography, 17.05.2021 21:50
History, 17.05.2021 21:50
Mathematics, 17.05.2021 21:50
Mathematics, 17.05.2021 21:50