Question Solved1 Answer The molar solubility in mol/L of Mg(OH)2 (Ksp=1.8x10-11) is 4.2x10-6M 1.8x10-11M 2.6x10-4M 1.7x10-4M

Acetic Acid in Water \( \quad \) Name: Hand-In, Chem 210Lonline Partner: See the attached rubric for more detailed information about grading. 1. (2 points) Write a balanced chemical equation for the acid dissociation reaction of acetic acid with water. Then write a correct equilibrium constant expression, \( K_{\mathrm{a}} \), for this reaction and list the Acetic Acid in Water Name: Hand-In, Chem 210Lonline Partner: See the attached rubric for more detailed information about grading. 1. (2 points) Write a balanced chemical equation for the acid dissociation reaction of acetic acid with water. Then write a correct equilibrium constant expression, Ka​, for this reaction and list the known Ka​ value (cite the source from which you obtained the value). Type answer here. } The following questions refer to Part 1 of this experiment in which you diluted a stock acetic acid solution with water. 2. (3) For each of the four solutions you prepared and studied report the formal concentration, the measured pH, the actual calculated concentrations for all the substances (products and reactants) involved in the reaction, and the % ionization of the acetic acid. Present this data in a table. \{Insert table here } 3. (2 points) Why did the pH change in the way it did as you diluted the acetic acid solution? Describe the change and explain why it occurs. Type answer here. } 4. (3 points) How does the percent ionization change as you dilute the acetic acid solution? Show a sample calculation of \% ionization for one of your solutions. In your sample calculation, be sure that it is clear what all the values are that you are plugging in to your calculation. \{nsert sample calculation here. } \{nsert discussion here. }

4.3 The following data are the response times in seconds for n = 25 Grade 1 students to arrange three objects by size: 5.2 3.8 5.7 3.9 3.7 4.2 4.1 4.7 4.3 3.1 2.5 3.0 4.4 4.8 3.6 3.9 4.8 5.3 4.2 4.7 3.3 4.2 3.8 5.4 a. Find the mean and the standard deviation for these 25 response times. Given that { x = 454.810 (4 marks) b. Order the data from smallest to largest. (2 marks) c. Find the Z-scores for the smallest and largest response times. Is there any reason to believe that these times are unusually large or small? Explain. (4 marks)

(a) According to Eq. 8 and 9, compute the gradient of g(W) withrespect to W. Your result should be in the form of X, Y, and W. TE 9(W) = {(x?W – y.) (7) = ||XW - Y113 = (XW-Y)'(XW-Y) (8) (9)

An electric motor rotating a workshop grinding wheel at a rate of 203 rev/min is switched off. Assume constant angular decel- eration of magnitude 2.02 rad/s². Through how many revolutions does the wheel turn before it finally comes to rest? Answer in units of rev. 1. 5.00675 28.82961 3. 14.2052 4. 11.3377 5. 10.6677 6. 17.8028 7. 6.52588 8. 13.4902 9. An electric motor rotating a workshop grinding wheel at a rate of 203 rev/min is switched off. Assume constant angular decel- eration of magnitude 2.02 rad/s². Through how many revolutions does the wheel turn before it finally comes to rest? Answer in units of rev. 1. 5.00675 28.82961 3. 14.2052 4. 11.3377 5. 10.6677 6. 17.8028 7. 6.52588 8. 13.4902 9. 14.7782 10. 16.7567

d²y 2 dx y = - 8x⁹ +1 Find d²y dx || Find dx d²y 2 dx². 8x³ y=- -7x 3 d²v 2 dt² v=3t²2² +6t+ 14 Find d²v 0- 2 dt² 11 Find d²y d²y dx 2° dx y = 4x +9 11 Find dy 2 dx y= d²y 2 dx² || 1 8 d²y 2 dx y=√x Find d²y dx || Find f''(x). f(x) = 5x²-13x- f''(x) = 4 3 X Find f''(x). f(x)=x¹/7 f''(x) = Find f''(x). -2 f(x) = 7x-² f''(x) = Find f''(x). f(x) = (x² d²y 2 dx y = - 8x⁹ +1 Find d²y dx || Find dx d²y 2 dx². 8x³ y=- -7x 3 d²v 2 dt² v=3t²2² +6t+ 14 Find d²v 0- 2 dt² 11 Find d²y d²y dx 2° dx y = 4x +9 11 Find dy 2 dx y= d²y 2 dx² || 1 8 d²y 2 dx y=√x Find d²y dx || Find f''(x). f(x) = 5x²-13x- f''(x) = 4 3 X Find f''(x). f(x)=x¹/7 f''(x) = Find f''(x). -2 f(x) = 7x-² f''(x) = Find f''(x). f(x) = (x² + 5)² f''(x) = For the function y = 9x5, find d^y 4 dx 11 day 4 dx

Standing on the roof of a 96-m tall building, a girl holds her hand past the edge and throws a ball straight up at 9.2 m/s. The ball rises, then falls and strikes the ground. Considering "up" to be the positive direction, find the ball's velocity v when it is 43 m above the ground. Remember to include a "-" sign if the velocity is negative. V= m/s Record Standing on the roof of a 96-m tall building, a girl holds her hand past the edge and throws a ball straight up at 9.2 m/s. The ball rises, then falls and strikes the ground. Considering "up" to be the positive direction, find the ball's velocity v when it is 43 m above the ground. Remember to include a "-" sign if the velocity is negative. V= m/s Record your numerical answer below, assuming three significant figures.