1. The diffusion constant for oxygen diffusing through tissue is1.0 × 10 11 m 2
ID: 1740509 • Letter: 1
Question
1. The diffusion constant for oxygen diffusing through tissue is1.0 × 1011 m2/s. In a certainsample oxygen flows through the tissue at 2.0 ×106 kg/s. If the thickness of the tissue isdoubled, then what is the rate of oxygen flow through thetissue?a. 1.5 × 106kg/s
b. 1.2 ×106 kg/s
c. 1.0 × 106kg/s
d. 0.6 ×106 kg/s
e. 0.4 × 106 kg/s
2. 200 Joules of heat flows into a 35 g sample. If the temperatureincreases by 10°C, then what is the heat capacity of thesample, in J/ °C?
a. 8.0
b. 12
c.16
d.20
e. 32
Explanation / Answer
1. The diffusion is inversely proportional to the thicknessof the membrane and hence the rate would become half when thethickness is doubled. Therefore the answer is 1.0 x 10-6kg/s.
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