Photosynthesis by land plants leads to the fixation each year of about 1 kg of c

Question

Photosynthesis by land plants leads to the fixation each year of about 1 kg of carbon on the average for each square meter of an actively growing forest. The atmosphere is approximately 20% O2 and 80% N2, but contains 0.046% CO2 by weight.
A.) What volume of air at 25 oC and 1 atm is needed to provide this 1 kg of carbon?
B.) How much carbon is present in the entire atmosphere lying above each square meter of the earth s surface? Hint : remember that atmopheric pressure is the consequence of the force exerted by all the air above the surface; 1 atm is equivalent to 1.033* 10^4 kg/ m^2
C.) At the current rate of utilization, how long would it take to use all the CO2 in the entire atmosphere directly above a forest? For this problem, make the (unreasonable, but greatly simplifying) assumption that circulation and replenishment mechanisms for the air above the forest are cut off

Explanation / Answer

1)let the volume be v ml.

so volume of Co2=0.00046*v

so number of moles=1000/44

using PV=nRT,

1*(0.00046V)=(1000/44)*298/12

or 1.227*10^6 L

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects