Nam Z w I, I Fad2/ 6) (3 pts) -OH OH + bas 7) (3 pts) + HBr 8. (3 pts) CH; O + H-OH H'. beat CH3-C 9. (3 pts) [O] [0] 10) O CH3-CH2-C-0-H + NaOH Heat CHEMI752K Page 7 of 7 ______________________________________________________________________________

Pre-Lab Procedure Calibration of a D'Arsonval ohmmeter You are going to design your very own analog ohmmeter. Your ohmmeter is constructed using four components shown in Figure 8 below: a D'Arsonval meter movement A2, internal and zero-adjust resistor R,.

In the lab, you will determine the accuracy of your ohmmeter using the calibration circuit of Figure 8. 1. To complete the design of your ohmmeter, you need to specify the value of the zero- adjust resistor R,. Using a D'Arsonval meter movement A2 with I 25 mA and r. 5 2, let R, 0 and let the current through A2 be 25 mA.

Using basic circuit analysis, determine the value of zero-adjust resistor R (Note: R, is a variable resistor, whose 25mA, resistance value can be changed by slide Rr 272 the arrow.) 1.5v 5 2) Figure 8. ohmmeter Calibration Schematic Circuit Show your steps to receive full credit