Advanced Material Topic Name Solving applied mass concentration problems

Question

GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new automated system that can detect normal levels of dissolved serum iron (65.

to 170./μgdL

), using a blood sample that is as small as 280μL

.

Calculate the minimum mass in micrograms of serum iron that the new system must be able to detect.

Round your answer to

2

significant digits.

Answer 1

The low level of detection according to the question is 65 ug/dL.

We are also told that as little as 280 ul of sample is needed.

65 ug/dL x 1 dL/0.1L x 1 L/1000 ul = 0.65 ug/ul

0.65 ug/ul x 280 ul = 182 ug Fe