A patient in the hospital is being given a saline solution through an IV. Each day, the patient receives 1200 g of water through the IV, but by no other means. A catheter collects all the urine leaving the bladder. It is determined that the daily water loss in urine is 1600 g. Assume that water does not leave the body by any other means. Also assume that the patient’s metabolic activity is normal. While the patient is in the hospital, the physician notices that they do not lose weight (assume from this that the mass of water in the body does not change with time). Hint: notice that the inlet and outlets streams are different, but the mass of water in the body does not change. a. Define the system (draw a diagram)
A patient in the hospital is being given a saline solution through an IV. Each day, the patient receives 1200 g of water through the IV, but by no other means. A catheter collects all the urine leaving the bladder. It is determined that the daily water loss in urine is 1600 g. Assume that water does not leave the body by any other means. Also assume that the patient’s
Hint: notice that the inlet and outlets streams are different, but the mass of water in the body does not change.
a. Define the system (draw a diagram)
b. State the extensive property to track
c. State the type of system (open, closed or isolated) and why
d. Is it reacting or non-reacting and why
e. State whether the system is steady state or dynamic and why
f. Write the accounting equation for the extensive property
g. Does the accounting equation make sense? Explain if it does or does not make sense biologically.
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