Its a multi step question that covers many sections of different chapters. I'm having trouble believing that the answers I arrived too are incorrect. Please solve each part thoroughly with explanations. Also, please do not submit incorrect work that will not help me fix any errors that I may have made. Look forward to growing. Thanks in advance! :)

2. If you obtain 98 colonies after spread plating 0.1 ml of a 1:1000 dilution of lake water, what is the concentration of bacteria in the lake water? Then convert the following to ml : 57 l, 260 l, 4200 l, 6 l, 0.25 liters, 2 liters, 0.05 liters, 0.004 liters. Lastly convert the following to \mu l : 9 ml, 0.2 ml, 0.010 ml, 0.059 ml

 

Chem 2202 Spring 2017 12. Provide the missing reagents for the following reaction scheme. (2 pts) OH t- PrCH Oi Pr No C Na OH At C13 one step) O Na Exam #2

For the following questions, identify which answers are wrong and which answers are correct (there may be than one correct answer) and then explain how you know the wrong answers are wrong and the correct answer is correct. Zn(s) + Cu^2+ rightarrow Zn^2+ + Cu(s) An electrolytic cell based on the reaction represented above was constructed from zinc and copper half-cells. The observed voltage was found to be 1.00 volt instead of the standard cell potential, E_, of 1.10 volts. Which of the following could correctly account for this observation? Correct or incorrect? Explanation: (B) The Zn^2+ electrolyte was Zn(NO_3)_2 while the Cu^2+ electrolyte was CuSO_4. Correct or incorrect? Explanation: (C) The Zn^2+ solution was more concentrated than the Cu^2+ solution. Correct or incorrect? Explanation: (D) The solutions in the half-cells had different volumes. Correct or incorrect? Explanation: (E) The salt bridge contained KCI as the electrolyte. Correct or incorrect?

A 100.0 mL aliquot of 0.100 M weak base B (pKb = 5.000) was titrated with 1.00 M HCIO4. Find the pH after 8.5 mL of acid is added. Find the pH after 11.5 mL of acid is added.