help me asap please Question 16 (1 point) The standard molar enthalpy of combustion of ethane...
please help as soon as possible ergent please i dont have any question left to post if you help to answer all will be so thankful The standard molar enthalpy of combustion of ethane (C2Helgy) is -1559 7 KJ mor 1. Which energy diagram corresponds to this process? Enthalpy 1559 Reaction coordinate 3559 Reaction coordinate Enthalpy -1559 Reaction coordinate Enthalpy -1559 Question 15 (1 point) What element is reduced and what is the reducing agent in the reaction below? Fe2O3(s)...
please help as soon as possible ergent Question 40 (1 point) Consulting the table of standard reduction potentials provided, which species is the best reducing agent? V reaction Ered (V) co2+ + e Co -0.28 Na* + e- Na -2.71 Осо3+ Na O Na Co Question 41 (1 point) sting of the Mn2/Mn and Cut/Cu half reactions. What Question 38 (1 point) Which base is the strongest? Base B. pkp = 3,45 Base A, Kp = 1.8x10-4 Base C. pkb...
Question 40 (1 point) Consulting the table of standard reduction potentials provided, which species is the best oxidizing agent? 12 reaction Ered (V) Pb4+ + 2e → Pb2+ +1.67 Cd2+ + 2e Cd -0.40 OCd O Pb2+ OP64+ O ca²+ Question 39 (1 point) Which balanced equation corresponds to the formation reaction for carbon monoxide, CO(g)? CO(g) + 1202(g) → CO2(g) 2CO(g) + O2(g) → 2CO2(g) C(s) + 102(g) → CO(g) 2C(s) + O2(g) → 2CO(g) Question 38 (1 point)...
Question 51 (8 points) A 10 gram sample of which substance contains the greatest number of hydrogen atoms? 10 grams of CH4 10 grams of HCI 10 grams of PH 3 10 grams of H2 Question 52 (8 points) What is the oxidation number of nitrogen in the nitrate ion? :0: +6 +5 O-1 +1 Question 49 (8 points) Which set of quantum numbers is correct and consistent with n = 4? me = -3 ms = +1 me =...
need help with these problems please A pH titration of a 300.0 mg sample of a weak acid HA in 100 mL of water is done by titrating with a 0.095M solution of NaOH. The resulting titration curve is shown below. Complete the following: (10 pts) a. The volume of NaOH used to titrate the solution to the endpoint is 15.5 ml, determine the number of moles of acid b. Determine the molar mass of the acid. For the following...
Please answer question B parts 1-7 RELAB 4 Reactions in Aqueous Solutions Worksheet A A. Write a balanced net i reaction between dilute (less than 0.1 M) aqueous solutions of onic equation using smallest whole number coefficients for the 1. 2, 3. 4. 5. calcium hydroxide and aluminum chloride. chromium(III) sulfate and barium hydroxide ammonia and hydrobromic acid perchloric acid and sodium hydroxide hydrocyanic acid (HCN) and lithium hydroxide. B. Consider the following unbalanced equation: WO3 (s) + Sn2+ (aq)...
help please asap Question 32 (1 point) What is the pH of a 0.056 M aqueous acetic acid solution? kg = 1.8 x 10-5. Your Answer: Answer Question 31 (1 point) A solution was made by adding 72 g of ethanol, C2H5OH, to 629 g of water. How much would this lower the freezing point? The freezing point depression constant, Kf, of water is 1.86 °C•m-1 and the molar mass of ethanol is 46.08 g.mol-1. (Don't use the degree sign...
Question 17 (1 point) What is the reaction for the standard enthalpy of formation for HCl(g)? 1/2 H2(1) + 1/2012(8) - HCI(1) H(aq) + Cl(aq) - HCl(g) 1/2 H2(g) + 1/2012(1) - HCl(s) NH3(g) + Cl2(8) -- NH2Cl(g) + HCl(g) 1/2 H2(g) + 1/2Cl2(8) -- HCl(g) Question 18 (1 point) A piece of iron (mass = 25.0 g) at 398 K is placed in a ste
please write legible. answer all questions. 1. Identify each of the following reactions as a precipitation reaction, an acid-base reaction or as a redox reaction Pb(NO), (aq) + 2 HCl(aq) - PbCl(s) + 2 HNO(aq) b. 2 H2 + Oxel - 2 H2O CHNO, (aq) + KOH(aq) - KNO, (aq) + H2O (1) d. Zn + 2HCl - ZnCl + H e. Ba"(aq) + 2 Br(aq) + 2 Na' (aq) +SO. (aq) BaSO. (s) + 2 Na'(aq) + 2 Br"...
please help Question 38 (8 points) What element is oxidized and what is the oxidizing agent in the reaction below? Fe2O3(s) + 3CO(g) - 2Fe(s) + 3CO2(e) Iron is oxidized, and the oxidizing agent is Fe2O3. Carbon is oxidized, and the oxidizing agent is Fe2O3. Iron is oxidized, and the oxidizing agent is CO. Carbon is oxidized, and the oxidizing agent is Co. Question 39 (8 points) What isotope is depicted in the figure? Key =proton =neutron lithium-7 helium-3 helium-4...