1. If a culture medium requires 3% (w/v) sucrose, how many grams of sucrose woul

Question

1. If a culture medium requires 3% (w/v) sucrose, how many grams of sucrose would you add to the following amounts of medium? a. 1 liter of medium ________ b. 250 mL of medium ________ c. 300 uL of medium ________

2. How many grams of the following compounds are contained in 250 mL of a 0.1 M solution?

sucrose (MW 342) _______

NaOH ________

magnesium chloride (x6H2O) _______

3. Assume you have 200 mL of 16 mM Dopa. How would you make 4 mL of 8 mM Dopa? 4 mL of 4 mM Dopa? 4 mL of 2 mM Dopa? 4 mL of 1 mM Dopa? 4 mL of 500 µM Dopa?

c1v1=c2v2

Assume you have 1 L of 11.7 M HCl . How would you prepare 105 mL of 0.15 M HCl.

You have 200 mL of a 0.5 M NaCl solution. If you add 500 mL of water, what is the molarity of the new solution?

Explanation / Answer

1. a. 3 gms

b. 12

c. 10

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