The amount of --------- excreted in urine per day is almost the same as that reabsorbed by the kidneys.

is it urea?

About 5–10% of urinary calculi (kidney stones) consist of calcium phosphate, Ca3(PO4)2. The normal mid range calcium content excreted in urine by a 60. kg patient is 0.086 g of Ca2+ per day. The normal mid range amount of urine passed by this patient may be taken as 1.2 L per day. What is the maximum concentration (in M) of phosphate ion that urine can contain before a calculus begins to form?

__________________ M

How is Oxycodone administered (oral), absorbed, distributed, metabolized, and excreted?

When wet air and dry air is put in 2 seperate beakers with a blackened brass discs which re-emits visible light absorbed in the form of infrared radiation and I shine a lamp for 10 minutes the temperature is almost the same in both the beakers. Could you please explain why?