Answer:
B
Step-by-step explanation:
<span>precision is after the decimal point.
</span>
Let:
Vbu= Volume of the buret
Vbk= Volume of the beaker
A buret initially contains 70.00 millimeters of a solution and a beaker initially contains 20.00 ml of the solution the buret drips solution into the Beaker. each drip contains 0.05 mL of solution, therefore:
x = Number of drips
a = volume of each drip
![\begin{gathered} Vbu=70-ax \\ Vbk=20+ax \\ \text{where:} \\ a=0.05 \\ Vbu=70-0.05x \\ Vbk=20+0.05x \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20Vbu%3D70-ax%20%5C%5C%20Vbk%3D20%2Bax%20%5C%5C%20%5Ctext%7Bwhere%3A%7D%20%5C%5C%20a%3D0.05%20%5C%5C%20Vbu%3D70-0.05x%20%5C%5C%20Vbk%3D20%2B0.05x%20%5Cend%7Bgathered%7D)
after how many drips will the volume of the solution in the buret and beaker be equal ? Vbu = Vbk:
x 55
-------- = ---------
69.50 100
69.50*55= 3822.5
3822.5/100= 38.225
x=$38.22
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