Chemistry, 27.06.2019 05:50 ValeriaVironche953
30 points studying the decay of radioactive isotopes in dead organisms scientists to identify fossilized remains. the ratio of c-12 to c-14 in the atmosphere is 1 x 1012. the table shows this ratio inside the body of three organisms. c12/c14 ratio organism c12/c14 ratio x 8 x 1012 y 2 x 1012 z 1 x 1012 what can most likely be concluded from the above information? only organism z is alive, and organism x has been dead longer than organism y. only organism z is alive, and organism y has been dead longer than organism x. only organism x is alive, and organism y has been dead longer than organism z. only organism x is alive, and organism z has been dead longer than organism y. read the chemical equation shown. 3so2 + 2hno3 + 2h2o → 3h2so4 + 2no which statement is true about this chemical equation? h (hydrogen) was oxidized and s (sulfur) was reduced. h (hydrogen) was reduced and n (nitrogen) was oxidized. s (sulfur) was oxidized and n (nitrogen) was reduced. s (sulfur) was reduced and n (nitrogen) was oxidized. read the following chemical equations. reaction 1: h2s + cl2 → 2hcl + s reaction 2: fe + s → fes which of the following statements is true for both the chemical equations? chlorine is reduced in reaction 1 and iron is reduced in reaction 2. chlorine is oxidized in reaction 1 and iron is oxidized in reaction 2. chlorine is oxidized in reaction 1 and iron is reduced in reaction 2. chlorine is reduced in reaction 1 and iron is oxidized in reaction 2.
Answers: 1
Chemistry, 22.06.2019 17:00, jazmine8194
Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease
Answers: 1
Chemistry, 22.06.2019 17:10, sophiaa23
)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
30 points studying the decay of radioactive isotopes in dead organisms scientists to identify fossi...
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