题目
题目

W25 BIOL D006B 01Y Cell & Molecular Biology Lab Quiz 1

多重下拉选择题

You are preparing a 10-fold serial dilution of a 40% glucose solution. A) What would the concentration (in %) of glucose be for the second dilution tube of the 10-fold dilution series? [ Select ] 20% 10% 2% 4% 0.4% B) You add 1.8 mL of water to each of 5 tubes as you prepare to make the 10-fold serial dilution. What volume of the 40% glucose solution would you need to add to 1.8 mL of water to achieve a 1:10 dilution? [ Select ] 20 µL 2 mL 200 µL 18 µL 180 µL C) The MW of glucose is 180. What is the molar (M) concentration of the 40% glucose solution? 2.2

选项
A.0.4%
B.200 µL
C.2.2
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思路分析
We will walk through each sub-question and evaluate every answer option before identifying the correct one. A) You are performing a 10-fold serial dilution starting from a 40% glucose solution. In a typical 10-fold dilution, each successive tube has one-tenth the concentration of the previous one. If Tube 0 (stock) is 40%, then Tube 1 would be 4%, and Tube 2 would be 0.4%. Among the options provided (20%, 10%, 2%, 4%, 0.4%), the only value that matches the......Login to view full explanation

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