21) Determine the K, for CH3NH3 at 25°C. The K for CH3NHh is 44 x 10-4...
A B C D 9.03 x 10 24 9.03 x 10 21 none of the above How many atoms of nitrogen are in 1.5 9.03 x 10 22 9.03 x 10 23 moles? 2.3 x 10 22 2.3x 10 21 2.3 x 10 23 none of the above How many atoms of nitrogen are in 3.8 moles? How many atoms of nitrogen are in 2.1 moles? How many atoms of nitrogen are in 4.8 moles? How many atoms of nitrogen...
Assignment 1-2019 1. X: 23 22 44 12 25 24 16 50 42 21 21 36 23 22 41 Y: 50 50 50 50 50 49 43 44 48 47 46 8 3 4 2 P: 5 3 5 7 12 5 43 15 17 11 48 50 41 12 50 a) Make a frequency distributions for data set x and i=1 b) Combine set x, y and p and make a grouped frequency distribution (use i = 4, first bin 2-5). c) Using the same data and distribution add a column that shows the proportion frequency and the relative frequency (%) d) add a further column that shows the cumulative frequency. 2. Use the following grouped frequency distribution to answer the following questions. Score f...
Question 5 Calculate Δ G° in k ncorrect 3NH2 (a) H200 - CH3NH3(a)+ for the following reaction from the equilibrium constant at the temperature given. K-4.40 x 10 4 at T-25 °C (aq) Selected Answer: [None Given]
11. What is the pH of 6.5 x 10' M KOH(aq) at 25 °C?(K - 1.01 X 10-) a. 4.19 b. 1.54 c. 4.19 d. 9.81 e. 12.46
3. The Ksp for silver chloride is 1.8 x 10-10 at 25 °C. What is the solubility of silver chloride (in mol L"?) in 0.025 M tin(IV) chloride solution? a) 8.5 x 10-5 b) 6.7 x 108 c) 7.2 x 10-9 d) 1.8 x 10-9 e) 1.3 x 10-5 4. What is the concentration of Zn2+(aq) ions in the solution made by adding water to zinc nitrate (0.10 mol) and ammonia (3.0 mol) so that the final volume of solution...
4) Calculate the molar solubility of AgCl (Ksp = 1.8 x 10-) at 25°C in: (a) Pure water (b) 3.0 M NH3 [Hint: AgCl(s) + 2NH3(aq) Ag(NH3)2(aq) + Cl(aq) K = 3.1 x 10
11. Determine the ion product. A) 1.1 x 10-4 B) 1.5 x 10-2 C) 7.8 x 10-3 D) 8.1 x 10- E) none of these 12. Will precipitation occur? A) Yes. B) No. C) Maybe, it depends on the temperature. D) Maybe, it depends on the limiting reagent concentration. E) None of these. The following questions (11, 12, 13) refer to the following system: 3.5 x 10- mL of 3.2 M Pb(NO3)2 and 2.0 x 102 mL of 0.020 M...
to t o 10. What is the equilibrium constant of the following reaction at 25°C? 1(s) + 2LiBr(s) 22Lil(s) + Br2(1) AHO=162 kJ mol-1, AS7=61.1 J mol-1 K-1 AGO=143 kJ mol a) 4 x 10-29 b) 1 x 1025 c) 9 x 10-26 d) 3.2 x 102 e) 3.1 x 10-3 11. What is the equilibrium constant of the following reaction at 25°C? Mg(OH)2(aq) + NaOH(aq) + NaOH(aq) + Mg(OH)2(s) a) 1.78 x 1025 -Ox0.1 b) 5.62 x 10-26 c)...
1) Determine the Kb for CN at 25°C The K, for HCN is 49. 10-10 A) 3.7 10-7 B) 23 , 10-9 14 x 10-5 D) 49 10-14 E) 20 - 10-5 2 ) 2) Calculate the solubility (in g/L) of calcium fluoride in water at 25°C if the Ksp for Ca F2 is 1.52 10-10 A) 96 10-4 gł B ) 26 x 10-2 g/L. C) 4.1 10-2 g/L D) 3.3 * 10-2 g/l 3) in the reaction C&HCl(aq)...
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII 27) Determine the Kb for CN at 25°C. The K, for HCN is 4.9.10-10. A) 1.4. 10-5 B) 49.10-14 C) 20.10-5 D) 23.10-9 E) 3.7.10-7 28) 28) Calculate the solubility (in g/L) of calcium fluoride in water at 25°C if the Ksp for Ca F2 is 1.5 10-10 A) 9.6 10-4 g/L B) 3.3. 10-2 g/L. C) 4.1 . 10-2 g/L. D) 2.6 x 10-2 g/L 29) 29) The equilibrium constant is given for two of the reactions below....