OC userin Chemistry·18 Nov 2017c. What are the posible values of mykezeschvalme og 60. What are the possible values of my for each value of I? a. O b. 1 c. 2 d. 3
OC userin Chemistry·16 Nov 201778. Consider this two-step mechanism for a reaction: NO2(g) + Cl2(8) CINO2(8) + C1(8) Slow NO2(g) + CI(g) , CINO2(8) Fast a. What is the overall reaction? b. Identify the intermediates in the mechanism. c. What is the predicted rate law?
OC userin Chemistry·16 Nov 201757. Which electron is, on average, closer to the nucleus: an electron in a 2s orbital or an electron in a 3s orbital?
OC userin Chemistry·16 Nov 2017111. Use the appropriate values of Ksp and Ki to find the equilibrium constant for the reaction. Fes(s) + 6 CN-(aq) Fe(CN)64-(aq) + 52- (aq)
OC userin Chemistry·14 Nov 201780. Suppose that the reaction A - products is exothermic and has an activation barrier of 75 kJ/mol. Sketch an energy dia- gram showing the energy of the reaction as a function of the progress of the reaction. Draw a second energy curve showing the effect of a catalyst.
OC userin Chemistry·16 Nov 2017114. What voltage can theoretically be achieved in a battery in which lithium metal is oxidized and fluorine gas is reduced? Why might such a battery be difficult to produce?
OC userin Chemistry·16 Nov 2017Contains Verified AnswerQ15. Which compound is more soluble in an acidic solution than in a neutral solution? a) PbBrz b) Cuci c) Agl d) Bar
OC userin Chemistry·15 Nov 201725. Consider the reaction: 2 HBr(8) — H2(g) + Brz(8) a. Express the rate of the reaction in terms of the change in concentration of each of the reactants and products. b. In the first 25.0 s of this reaction, the concentration of HBr dropped from 0.600 M to 0.512 M. Calculate the average rate of the reaction during this time interval. c. If the volume of the reaction vessel in part b was 1.50 L, what amount of Brz (in moles) was formed during the first 15.0 s of the reaction?
OC userin Chemistry·14 Nov 2017Q3. Which idea came out of Rutherford's gold foil experiment? a) Atoms contain protons and neutrons. b) Matter is composed of atoms. c) Elements have isotopes. d) Atoms are mostly empty space.
OC userin Chemistry·12 Nov 201769. What are the products of each aromatic substitution reaction? H H + Br2 FeBry febrer CH3 + CH3-CH-a Ald;
OC userin Chemistry·13 Nov 2017121. A 0.25-mol sample of a weak acid with an unknown pk, was combined with 10.0 mL of 3.00 M KOH, and the resulting solu- tion was diluted to 1.500 L. The measured pH of the solution was 3.85. What is the pKof the weak acid?
OC userin Chemistry·13 Nov 201758. Which buffer system is the best choice to create a buffer with pH = 9.00? For the best system, calculate the ratio of the masses of the buffer components required to make the buffer. HF/KF HNO2/KNO2 NH3/NH4Cl HCIO/KCIO
OC userin Chemistry·10 Nov 201794. The solubility of copper(I) chloride is 3.91 mg per 100.0 mL of solution. Calculate Ksp for CuCl.
OC userin Chemistry·10 Nov 201715. Explain how a chemical reaction occurs according to the coll- sion model. Explain the meaning of the orientation factor in this model.