I have the answer for question 1and 2 but I need the answer for questions 4 and 5 please help me thanks

Case 1: Hero that wears scrubs (30 pts. total) You work as a nurse in one of the busiest hospitals in town. During your shift, it happens that there are significant number of patients with certain conditions that need solution X for IV administration. However, your hospital ran out of solution X and only have a pure solid X in stock. As a nurse with a chemistry background, you are confident that you are able to make the same solution as the 50% X solution in the label below and able to do dilution to obtain a lower solution X concentration as needed. 50% Solution X Rx only 50 mL Single-dose NDC 0409-7517-66 50% Solution X Injection, USP For intravenous use. Usual dosage: See insert Sterile, nonpyrogenic. 253 mOsmoVmL (calc.), pH 4.2 (32 to 6.5) Q1: The 50% solution X is reported as its % w/v concentration. If you want to make 50 mL of 50% solution X, how much of the pure solid X in grams will you need? (5 pts.) Q2: How many moles of compound X are there in 50% solution X? MW of compound X = 198.17 g/mol (2.5 pts.) (i) 50% m/v = (x g of X / 50 mL of solution) * 100% Mass of = 25 g (ii) 25 g of X ( 1 mol / 198.17 g) = 0.126 mol of X (iii) 0.126 mol / 0.05 L of solution = 2.52 M of solution X. (iv) C1V1 = C2V2 => > Q3: What is the molar concentration of 50% solution X? (2.5 pts.) 04: If few patients need 25% solution X, how many mL do you need of the 50% solution X to make 1000 mL of 25% solution X? (5 pts.) Q5: The pH of 50% solution X is provided in the label. How many molecules of H30* are there per liter? MW of H30* is 19.02 g/mol. Hint: You need to use Avogadro's number. (15 pts.)