Solve the all parts of following question given below:

Question: The extracellular fluid volume varies with the size of the person. Suppose an individual we determine that the ECF is 14 L. The average [Na+] in the ECF is about 143 mM.

Part A: What is the total amount of Na+ in the ECF, in moles? In grams?

Part B: Suppose this person works out and sweats 1.5 L with an average [Na+] of 50 mM. During this time the urine output is 30 mL with an average [Na+] of 600 mM. How much Na+ is lost during the workout?

Part C: If the person does not drink fluids at all during the workout, what will be the [Na+] in the plasma at the end of the workout? Assume that all of the fluid in the sweat and urine originated from the ECF.

Please explain each step and equations used for above question. Thanks.