Which statement is incorrect for preparing a buret for a titration?
a. on a buret, the zero mark is at the top, so a buret is read from top to bottom.
b. a buret must be clean or liquid will adhere to the inside of the walls of a dirty buret.
c. make sure there are no air bubbles in the tip or stopock of the buret prior to starting a titration.
d. when rinsing a buret, the rinse liquid should be drained through the stopcock.
e. the buret should be rinsed a few times with water before filling the buret with the solution.
the answer is c: bilateral cingulotomy
explanations: - as per the significant figures rule, in multiplication and division, we go with least number of sig figs.
4.03 has three sig figs where as 0.0000035 has two sig figs only, the zeros in this number are not sig figs as they are just holding the place values. as the least number of sig figs here is two, the answer needs to be reported with two sig figs only.