30. Simplify. 1.2 x 104.8 x 104 A. 2.5 x 102B.2.5 x 10-9 C.2.5 x 10...
9. What is the pH for 0.20 M HCIO solution? K = 2.5 x 10-7 a) 4.05 b) 3.70 c) 4.80 d) 7.00 e) 7.40 10. What is the pH of a mixture containing 0.30 M HNO, and 0.15 M NaNO, (K, for HNO2 is 4.5 x 104) a) 4.35 b) 3.05 c) 4.65 d) 5.01 e) 4.05 11. Acid strength increases in the series: HCN <HF <HSO.. Which of these species is the strongest base? a) SO42- b) F-...
(d) 2.5 X 10 16 (e) - 1.0 X 10 " 2. An electron in a TV picture tube is accelerated through a potential difference of 1.0 X 10' V before it hits the screen. What is the kinetic energy of the electron in electron volts (a) 1.0 X 104 eV (b) 1.6 X 10-15 eV (C) 1.6 X 10-22 eV (d) 6.25 X 1022 eV (e) 1.6 X 10-19 eV
6. Solve for x log2 (x + 7) + log 2x-3. a) x+7=3 b) 1 c) not possible x d) none of these 7. Evaluate log, a) x b) c) not possible d) none of these 8. What is the solution of -764? a) -2 b) 0 c) 2 d) 10 9. Find the approximate value of the expression log 16 160 a) 0.54 b) 1.83 c) 2.20 d) 0.9 10. Find the value of the expression 2.5 b) 12.2...
please help 9 to 11 !! thanks
Evaluate the following anti derivatives F(x), Simplify. (5 9)/(x) = 2x3-5x + 7 10) f(x) 3Cosx+ Sine 4f2 11) f(x)=
Evaluate the following anti derivatives F(x), Simplify. (5 9)/(x) = 2x3-5x + 7 10) f(x) 3Cosx+ Sine 4f2 11) f(x)=
addio X4 (9 10. The Kip of Agl is 1.5 x 10-16. Calculate the solubility in mol/L of Agl in a 0.30 M Nal solution. A) 4.5 x 10-17 KS p = Ag+ B) 0.30 I C) 1.5 x 10-6 x+0.30 D) 1.2 x 10 E) 5.0 x 10-16 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 10 mL of 0.020 M NaCl are added together....
MT 118/018, HW, CHAPTER 6, SPRING 2020 C. + 1+ Divide and simplify 7 14 - 7 #46: 3x 18 - 2) Pages 351-352 (6.1 Exercise Set): #16, 20, 32, 34, 46, and 62 (6 questions) Simplify each rational expression #16: #62: R 3) Pages 359-360 (6.2 Exercise Set): #8, 28, 30, and 32 (4 questions) Add or subtract as indicated. Simplify each answer. #32: Bư- 27 +6+9 128 Multiply and simplify. 134: Page 2 of 5
Three charges are located as shown in the figure, with values q1 = 4.4 x 10-16 C, q2 = -1.2 x 10-16 C, q3 = 5.5 x 10-16 C. The charges are separated by d1= 2.1 x 10-6m and d2 = 3.9 x 10-6m.Part (a) What is the force of q2 on q1 in the x direction, Fx? Give your answer in newtons, and recall k = 8.988 x 109 N m2/C2. Part (b) What is the force of q3 on q1 in...
Problem 7: (30 points) A square foundation, 2.5 x 2.5 m in size, supports a column load of 478 kN. The soil characteristics are given in the figure below. A. Estimate the average stress increase in the clay layer due to the applied load. B. Estimate the primary consolidation settlement 478 KN 1.5 m 2.5 m2.5 m 16 km GWT 1.75m 1 IRSIN. W 1996 G-2.71 2-37 - 65 km C-15 C -0.240 7- 20 ANS Sund Clay ty @...
4. Calculate the pH of a solution with 2.5 x 103 mol CsHsN and 1.2 x 10-mol HCl in 100 mL. The Kb for pyridine is 1.7 x 109.
d) ka-9.jj×10 Ka 1.45 x 104 P19. (Sec. 15.5) What is the pH of a 0.35 M solution of nitrous acid, HNO2? [Hint: ICE Table & Percent Ionization] & (Ka 4.5 x 104) HNO2(aq)H(aq)+ NO2 (aq)4.5 x 1o a) 4.11 b) 3.29 c) 12.70 d) 1.90 e) 9.10 P20. (Sec. 15.5) What is the pH of a 0.095 M solution of hydrofluoric acid, HF? [Hint: ICE Table & Percent Ionization] & (Ka = 6.8 × 10-4) 4