Gamewizard Posted March 20, 2011 Share Posted March 20, 2011 Hi, I need some help on this type of question. How would I calculate this ? If the absorbance at 540 nm of a sample of blood diluted 201 times in Drabkin's solution is 0.511 and that of a 0.572 g/L haemoglobin in Drabkin's solution is 0.325, what is the haemoglobin concentration of the blood sample in g/L? (the answer should be to one decimal place) I tried to work this out twice using the hb concentration formula which is absorbance of test*concentration of ref. prep. *dilution of blood/absorbance of ref. prep. but the answers I got was incorrect, and I cant tell where i am going wrong so can someone please have a look at this. Thanks Link to comment Share on other sites More sharing options...
Schrödinger's hat Posted March 20, 2011 Share Posted March 20, 2011 Post your working, makes it easiest to see where you went wrong. You can use [math]\text{[math]}[/math]and[/math] to enclose equations to make it a little easier to read, also \frac{upperstuff}{lowerstuff} will make a fraction Link to comment Share on other sites More sharing options...
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