3) (a) Brownian motion describes the movement of...circle your answer Single mol

Question

3) (a) Brownian motion describes the movement of...circle your answer Single molecules or A group of molecules enclosed within a particular area (b) Diffusion describes the movement of...circle your answer Single molecules A group of molecules enclosed within a particular area or 4) (a) Consider the following molecules: Glucose (CH,O) Water (H,O) Starch Potassium iodide (lsKI) Write a number "1" above the smallest molecule. Write a number "4" above the largest molecule. Write "2" and "3" accordingly over the remaining two molecules. (b) The picture below represents a piece of dialysis tubing. Note how it contains several pores. Which of the molecules from part a is the most likely to be able to move through the dialysis tubing? Explain your answer. (c) Which of the molecules from part b would be least likely to be able to move through the dialysis tubing? Explain your answer 5) Suppose that someone gives you an unknown solution, and you wish to find out whether this solution contains glucose. To do this, you perform a Benedict's test. a) Performing this test requires adding something called solution to the solution of interest. b) Consider the solution you named in the previous question. After adding this to your solution of interest, what do you have to do next? If you perform a Benedict's test on a solution that does contain glucose, then it would produce what color(s)? c) d) If you perform a Benedict's test on a solution that does not contain glucose, then what would you expect to see? 18

Explanation / Answer

3) (a) A group of molecules enclosed within aparticular area.

(b) A group of molecules enclosed within aparticular area.

4) (a) 1 2 3 4 => Water (MW-18.0) Potassium iodide(MW-166.0) Glucose(MW-180.15) Starch (MW-342.3).

(b) water will pass easily because of its smallest molecular size.

(c) Starch will not be able to pass since it has larger size and dialysis membrane is not permeable to it.

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.