learningizk00l
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Tests on the man whose blood was used to construct Figure 8 gave the following data.
Concentration of haemoglobin in blood = 150 g dm^-3.
Volume of oxygen carried by fully saturated haemoglobin = 1.35 cm^3 g^-1.
Resting heart rate = 60 beats per minute.
Volume of blood pumped out of left ventricle every beat = 60 cm^3.

Use these data and information from Figure 8 to calculate the volume of oxygen released to the man's tissues per minute whilst he was at rest.

(Asks for answer in dm^3)
I can't find an official mark scheme answer but according to a quizlet set mine is wrong. I did this:
saturation of Hb with oxygen (which will then be released to tissues)= 38%
60x60=3600cm^3min^-1
Oxygen saturation: (38/100)x1.35=0.513 cm^3g^-1
haemoglobin volume:0.150x3600=540gmin^-1
then finally the volume of oxygen =540x1.35=729cm^3min^-1

The percentage saturation seems quite high but I really don't see how it can be much lower on the graph (attached)
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deskochan
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Oxygen saturation: (38/100)x1.35=0.513 cm^3g^-1
haemoglobin volume:0.150x3600=540gmin^-1
then finally the volume of oxygen =540x 0.513 =277cm^3min^-1
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learningizk00l
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(Original post by deskochan)
Oxygen saturation: (38/100)x1.35=0.513 cm^3g^-1
haemoglobin volume:0.150x3600=540gmin^-1
then finally the volume of oxygen =540x 0.513 =277cm^3min^-1
oops yeah that's what i meant
thanks
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