5,6,7?

Question 5 Calculate the dilution if 5mL of serum are diluted with 15mL of saline solution. Not yet answered Select one: Points out of a. 1:3 1.00 b. 1:2 c. 1:4 d. 1:5 Question 6 Not yet answered Points out of 1.00 P Flag question Calculate the molarity of a solution of NaCl containing 87g per liter of solution (Desired units-moles) MW of NaCl=58.5g. Select one: a. 5.85M b. 1.49M c. 4.28M d. 1.65M Question 7 How much 20% alcohol is required to make 1L of 10% alcohol? Not yet answered Select one: Points out of a. 0.1L 1.00 b. 0.5L P Flag c. 1.0L d. 0.2L