Problemquestion 1 what is the molarity of a 15 nacl, Ask an Expert

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Question 1: What is the molarity of a 1.5% NaCl solution?

Question 2: Suppose 500 ml of urine is diluted with 1250 ml of water. What is the dilution factor?

Question 3: If 150 ?l of a solution of serum is added to 90 ?l of water, what is the dilution factor?

Question 4: Suppose a sample of 200 ?l of blood needs to be diluted 1/50. How much diluent should be added and what will be the final volume?

Question 5: Suppose that a sample of urine is diluted 1/2, 1/3, and then 1/4. What is the final dilution factor?

Question 6: Suppose that a sample of red blood cells at a concentration of 2.69 x 106cells/ml is serially diluted 1/10 three times and then serially diluted 1/2 two times. What is the final concentration of cells/ml?

Question 7: A sample of yeast cells was serially diluted 1/10 five times and then serially diluted 1/3. The number of yeasts was 338 yeasts per ml. What was the original concentration?

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Category:- Biology
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