Determine the Kb

You may want to reference (Pages 187 - 190) Section 5.7 while completing this problem. Part C Using values from Appendix C, calculate the value of AH° for each of the following reactions. 2CuO(s) +NO(g)→CU2O(s) +NO2 (g) Express your answer using three significant figures. ? ΔΗ3 kJ Submit Request Answer Part D 4NH3(g) + O2 (g)→2N2H4(g) +2H2O(1) Express your answer using five significant figures. ? AĦgm = kJ

is 4.5 x What is the pH of a 0.540 M solution of Ca(NO,), (Ka of HNO, 104)?

Here is ph of the probability of an atom moving with a particular speed, for a sample of argon gas at -92. °℃. probability 0 100 200 300 400 speed (m/s) What is the most likely speed of a Ar atom in this sample? What higher speed is only half as likely as the most likely speed? 500 What higher speed is only 10% as likely as the most likely speed? 600 Use this graph to answer the following questions. Round each of your answers to the nearest m/s. Note: your answers must be within 25 m/s of the exact answers to be graded correct. m S 7.0 S 0"/ 700 S 800

Aqueous solutions of calcium chloride and sodium hydroxide react to form solid calcium hydroxide. The balanced net ionic equation is: A) Ca+2(aq) + 2OH-(aq) + 2Na+(aq) + 2Cl-(aq) → Ca(OH)2(s) B) Ca+2(aq) + 2OH-(aq) + Na+(aq) + Cl-(aq) → Ca(OH)2(s) C) Ca+2(aq) + 2OH-(aq) → Ca(OH)2(s) D) CaCl2(aq) + 2NaOH(aq) → CaOH(s) + NaCl(aq) E) CaCl2(aq) + 2NaOH(aq) → Ca(OH)2(s) + 2NaCl(aq)

Using the information below, calculate AH of NH3(g) + HCI(g) NH,CI(s). N, (8) + H, (8) NH,(g) AH = -46.19 kJ/mol > H, (g) + Cl,(8) → HCl(g) AH = -92.30 kJ/mol N, (8) + 2 H, (g) +Cl,(g) NH,Cl(s) AH = –314.4 kJ/mol • Your answer should have four significant figures. Provide your answer below: kJ/mol

How do I calculate Δf H of MgCl(s) given the following data? Enthalpy of sublimation for Mg(s) = + 146 kJ/mol enthalpy of dissociation of Cl2 (g)= +244 kJ/mol electron affinity of Cl- = -349 kJ/mol first ionization energy of magnesium Mg (g) = 738 kJ/mol lattice energy of MgCl(s) = -676 kJ/mol.

Choose the reaction that illustrates AH°f for LiHSO̟. O Lit(aq) + HSO ¹(aq) → LiHSO(s) O Li(s) + 2 H(g) + S(s) + 4 O(g) → LiHSO(s) O Li+(aq) + H2O(l) + SO2(g) → LiHSO(s) Li(s) + 1/2 H2(g) + S(s) + 2 O2(g) → LiHSO(s) O Li(s) + H2(g) + S(s) + 2 O2(g) → LiHSO₁(s)

A model for the compound 2,2- dimethylbutane is shown. Write a balanced chemical equation that shows the formation of 2,2-dimethylbutane from the elements carbon (C) and hydrogen). (Use the smallest integer coefficients possible and do not include states.) A model for the compound 2,2-dimethylbutane is shown Write a balanced chemical equation that shows the formation of 2,2-dimethylbutane from the elements carbon (C) and hydrogen (H₂) (Use the smallest integer coefficients possible ond do not include states.)

Match the following reactions with their reaction type.