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Posted: **Wed May 18, 2022 11:33 am**

: Question 5 0 0 5 Pts At The Beginning Of An Experiment The Liquid In A Buret Is At 12 50 Ml The Stopcock Is Opened To 1 (45.87 KiB) Viewed 59 times

: Question 5 0 0 5 Pts At The Beginning Of An Experiment The Liquid In A Buret Is At 12 50 Ml The Stopcock Is Opened To 2 (56.52 KiB) Viewed 59 times

Question 5 0/0.5 pts At the beginning of an experiment, the liquid in a buret is at 12.50 ml. The stopcock is opened to dispense some liquid. After the stopcock is closed, the liquid in the buret is at 25.80 ml. How much liquid has been dispensed from the buret? 13.30 mL 12.50 mL 25.80 mL 38.30 mL It is impossible to know how much liquid was added because the experiment should have been started with the liquid at the 0.00 mL mark on the buret.
Question 2 0/0.5 pts Suppose you are using a buret to dispense a solution of 0.80 M NaOH. The buret is wet on the inside. What should you do before filling the buret with this 0.80 M NaOH solution? Rinse the buret 3 times with small amounts of the 0.80 M NaOH solution and pour the rinse solution in a waste container. Then fill the buret with 0.80 M NaOH. Rinse the buret 3 times with deionized water and pour the rinse solution in a waste container. Then fill the buret with 0.80 M NaOH. Blow air through the buret until it is dry. Then fill the buret with 0.80 M NaOH. Dry the inside of the buret with a paper towel.