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| GlowScript 2.9 VPython | |
| # https://www.wired.com/story/plant-a-tree-for-climate-change/?mod=djemTECH | |
| na=6.022e23 | |
| #diameter of tree | |
| d=1.5 #m | |
| #height of tree | |
| h=15 # | |
| #density of tree | |
| rho=500 #kg/m^3 | |
| V=pi*h*(d/2)**2 | |
| mt=rho*V | |
| #fraction carbon in tree | |
| fcarbon=0.5 | |
| mcarbon=fcarbon*mt | |
| mucarbon=0.012 #kg/mole | |
| ncarbon=mcarbon*na/mucarbon | |
| #number of trees | |
| Ntree=100e9 | |
| NCO2=Ntree*ncarbon | |
| muair=28.97e-3 #kg/mol | |
| #mass of atmosphere | |
| mair=5e18 #kg | |
| Nair=mair*na/muair | |
| fractionCO2=NCO2/Nair | |
| ppmCO2=fractionCO2*1e6 | |
| newppm=400-ppmCO2 | |
| print("Starting CO2 Concentration = ",400," ppm") | |
| print("CO2 with 1 Tree per Person = ",newppm," ppm") |
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