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Complete and balance the following reactions for which
Complete and balance the following reactions for which reactants are given. Provide the state of each product. Additionally, indicate the type of reaction that is taking place. a) ____Al(s) + ____O2 (… read more
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Which is the correct reduction half-reaction for the
Which is the correct reduction half-reaction for the following equation? Ba + CuO -> BaO + Cu (a) Ba+2 + 2 e-1 -> Ba (b) Cu -> Cu+2 + 2 e-1 (c) Ba -> Ba+2 + 2 e-1 (d) Cu+2 + 2 e-1  Cu… read more
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1.2*10-2 mol copper(I) oxide reacts with 2.0*10-1 mol boric
1.2*10-2 mol copper(I) oxide reacts with 2.0*10-1 mol boric oxide: CuO + B2O3 → Cu(BO2)2 How many mole of oxygen atoms are there in the reaction product?… read more
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18. An electrochemical cell is prepared by coupling the
18. An electrochemical cell is prepared by coupling the following half- reactions Al+3(aq) + 3 e- à Al(s) Eo = -1.66 volts Cu+2(aq) + 2 e- à Cu(s) Eo = +0.34 volts The free energy change (expressed in… read more
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Which of the following is an oxidation-reduction reaction?
Which of the following is an oxidation-reduction reaction? Group of answer choicesCu (s) + 2AgNO3 (aq) → 2Ag (s) + Cu(NO3)2 (aq)Ba(C2H3O2)2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaC2H3O2 (aq)AgNO3 (aq) + … read more
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Which of the following is an oxidation-reduction reaction?
Which of the following is an oxidation-reduction reaction? Group of answer choicesHCl (aq) + NaOH (aq) → H2O (l) + NaCl (aq)Ba(C2H3O2)2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaC2H3O2(aq)Cu (s) + 2AgNO3 (a… read more
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This question has multiple parts. Work all the parts to get
This question has multiple parts. Work all the parts to get the most points. Classify each of the following reactions.(a) 4NH3 + 5O2 → 4NO + 6H2O a nonredox reaction a redox reaction (b) Cu + S → CuS … read more
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Using the equations below Cu(s) + 1/2 O2(g) CuO(s) H
Using the equations below Cu(s) + 1/2 O2(g) ? CuO(s) ?H? = -156 kJ 2Cu(s) + 1/2 O2(g) ? Cu2O(s) ?H? = -170 kJ what is the value of ?H? (in kJ) for the following reaction? 2CuO(s) ? Cu2O(s) + 1/2 O2(g)… read more
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When the solids Ba(OH)2 and NH4SCN are mixed, a solution is
When the solids Ba(OH)2 and NH4SCN are mixed, a solution is produced and the temperature drops. Ba(OH)2(s) + 2NH4SCN(s) ? Ba(SCN)2(aq) + 2NH (g) + 2H2O(l) Which statement about the energetics of this … read more
R.R. Jha
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Assignment 1 of Procedure 1 1. Record and calculate the
Assignment 1 of Procedure 1 1. Record and calculate the following: (a) Mass of copper used in the reaction 1 gram (b) Mass of beaker and dry silver 114.81g (c) Mass of an empty beaker 111.420g (d) Mas… read more
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SAFA 25. The standard reduction potentials for Cr2+(aq) and
SAFA 25. The standard reduction potentials for Cr2+(aq) and Sn2+(aq) are -0.91 V and -0.14 V, respectively. Cr+2 + 2 e- ? Cr E°red = -0.91V Sn+2 + 2 e- ? Sn E°red = -0.14V Which element, chromium or t… read more
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Given Ka values of 4.8 x 10-10 and 6.8 x 10-4 for HCN and HNO2
Given Ka values of 4.8 x 10-10 and 6.8 x 10-4 for HCN and HNO2 respectively, calculate the equilibrium constant for the following reaction: HCN + NO2- ? CN- + HNO2 A) 7.05 x 10-7 B) 3.26 x 10-14 C) 1.… read more
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Review Questions 1. If A B is a first order reaction and
Review Questions 1. If A?B is a first order reaction and the concentration of A falls from 0.050 M to 0.015 M after a period of 20 minutes, what is the rate constant, k, for this reaction? A) -0.060 m… read more
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1. Use the definitions of acid and base to identify the first
1. Use the definitions of acid and base to identify the first compound in each equation as an acid or a base. a)C5H5N+H2O?CH3CH2S-+H3O+ b)CH3NH2+H2O? CH3NH3+ +OH- c)C6H5SO2NH2+H2O? C6H5SO2NH-+H3O+ 2. … read more
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1. To figure out the exact pH of a solution, youll need todetermine
1. To figure out the exact pH of a solution, you'll need to determine the A. concentration of OH– ions. B. concentration of H+ ions relative to the concentration of OH– ions. C. concentration of H+ io… read more
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1Which response includes all the following that are
1Which response includes all the following that are oxidation-reduction reaction and no others I. BaO3(s) --> BaO(s) + SO2 (g) II. 2K (s) + Br2 (l) --> 2KBr (s) *III. H2CO3(aq) + Ca(OH)2 (aq) --… read more
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Having trouble with a few Chemistry101 problemsWhich one ...
Having trouble with a few Chemistry101 problems Which one of the following represents the net ionic equation for the reaction of nitric acid with aluminum hydroxide: a)3H+(aq)+Al(OH)3(s)->Al^3+(aq)… read more
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Dynamics in Chemical Reactions Examination #00760900 ...
Dynamics in Chemical Reactions Examination #00760900 I Request an Expert DrTutor39059.0895489583… read more
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