Question

2. If only 25 mL of 9% saline solution is available in the lab, how many mL of 5% solution can be made? 3. How many grams of NaCl are needed to prepare a 0.5 M solution of NaCl? How many milligrams is that? 4. To dilute a sample 1:10, how many parts of sample and diluent are needed to make a total volume of 0.5 mL? 5. You need to make a 1:2 dilution using 1.3 mL of serum. How much diluent do you need? 6. How many grams of CaCl2 are needed to prepare 100 mL of 0.5 M solution of CaCl2? (MW of Ca= 40.08 g/mol) (MW of Cl-35.4 g/mol) 7. How many grams of CaCl2 are needed if you were making 500 mL of a 0.5 mM solution? How many milligrams is that? 8. 6 mL of liquid is added to a flask and the total volume is brought to 300 mL. The solution is 9.3 g of substance A in 4000 mL of solvent is W/V?

          2. If only 25 mL of 9% saline solution is available in the lab, how many mL of 5% solution can be made? 
    3. How many grams of NaCl are needed to prepare a 0.5 M solution of NaCl? How many milligrams is that? 
    4. To dilute a sample 1:10, how many parts of sample and diluent are needed to make a total volume of 0.5 mL? 
    5. You need to make a 1:2 dilution using 1.3 mL of serum. How much diluent do you need? 
    6. How many grams of CaCl2 are needed to prepare 100 mL of 0.5 M solution of CaCl2? (MW of Ca= 40.08 g/mol) (MW of Cl-35.4 g/mol) 
    7. How many grams of CaCl2 are needed if you were making 500 mL of a 0.5 mM solution? How many milligrams is that? 
    8. 6 mL of liquid is added to a flask and the total volume is brought to 300 mL. The solution is 9.3 g of substance A in 4000 mL of solvent is W/V?

Added by Mar G.

Question

Please give Ace some feedback