Question

Diluting Blood: Antume that a blood sale of a healthy male has roughly 5.50.10 colis (colis per microter where tm. 1000 L To obtain a test sample of 200 ml with a concentration of prechaly 3.10 how much of the original blood sample should be diluted? (Round your answers to the nearest mL) mL of original sample needs to be disted to 200 mL to achieve the desired concentration of cols in the diluted test sample

Answer 1

Original blood sample has concentna tion 5:50 x10 6 cells/mL. = 5.50 x 10" cells/mL E' | m_= 1000 ML Obtained blood sample : chas: quantity. = 200 ml. and concentration. 3x10 6 cells/il = 3x10" cells/mL Let x mL blood coniginal) needed to. taken. "Then we get, xx 5.50109 = 200 x 3x109 I comparing the total number of cells aften diluting 11 -> x = 200 x 3 x109 5.508 109 X 109°09 mL. Hence, 109.09 mL of original. blood ir diluted to obtain obtain 200 ml blood of concentration 3x10 9 cells/mL

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