Group 1. How many grams of glcose would be dissolved to make 200 mlof a 2.00 M g
ID: 209552 • Letter: G
Question
Group 1. How many grams of glcose would be dissolved to make 200 mlof a 2.00 M glucose sohution? Molecelar weight of glucose: 180 grams/mole A. 18g B.7200g C.728 D.180g 2. In an SDS-PAGE A proteins are denatured by the SDS B. proteins migrate to the anode (positive electrode) C. sma D. all of the above E. none of the above ller proteins migrate more rapidly through the gel 3. A stock solution of 2.00 M NaCl is available. How many milliliters are needed to make 100.0 ml of 250mM? A. 12.5m B. 125ml C. 250ml D. 25ml 4. How much ampicillin (in grams) do you need to make 10 ml of 100mg/ml ampicillin? Ampicillin dissolves in water A. 10g B. Ig C. 100g D. 1000gExplanation / Answer
1. The correct option is C. 72 gm.
To prepare 1M of 1L solution, 180 gm of glucose is required.
To prepare 200 mL of 2M solution, we require 180 x 2 x 0.2 = 72 gm of glucose.
2. The correct option is D. All of the above.
All the options A, B and C are correct.
3. The correct option is A. 12.5 mL.
C1 = 2M, V1 = ?, C2 = 250 mM and V2 = 100 mL.
V1 = C2 x V2 / C1 = 0.25 x 0.1 / 2 = 12.5 mL
4. The correct option is D. 1000 g.
For 1 ml of 100 mg/ml solution, we need 100 mg of ampicilin.
So, for 10 ml of 100mg/ml solution, we need 100 mg x 10 = 1000 mg = 1 g of ampicilin.
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