 # Question & Answer: Needed information for the problem Conversion problem: The molecular weight of urea…..

Needed information for the problem

Conversion problem: The molecular weight of urea [CO (NH2)2​] is 60. The molecular weight of blood urea nitrogen/serum urea nitrogen (BUN, N2) is 28.

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Ratio and proportion problem: 60 g. mol. wt Urea/28 g. mol. wt BUN = mg/dL Urea/ mg/dL BUN

Problem

If a BUN is reported to be 15 mg/dL, what would be the urea result in mg/dL? mmol/L?

Show all work please, and report to the nearest tenth. Thanks

As it is given that :

60 g.mol.wt BUN/28 g.mol. wt BUN =mg/dL urea /mg/dL BUN

let x be the amount of urea in , when BUN is 15 mg/dL.

=> 60 / 28 = x / 15

=> x = 32.142857 mg/dL

=> and conversion of mg/dL to mmol/l is 1mg/dL/18 =1 mmol/L

=> x = 32.142857 / 18 = 1.7857 mmol/L.