# Biogeochemistry

Anonymous
timer Asked: Apr 3rd, 2016

Question description

Hello i am having difficulty with my Stoichemetry homework, please help me?

1. [20 pts] A lake has an input of 1 g P m-2 yr-1. Assuming that all the P is used to create algal biomass which is 50% C by weight and has a Redfield molar ratio of 106:16:1 (C:N:P),

a) how much biomass (dry weight m-2 yr-1) could be supported in this lake?

b) how much N (g m-2 yr-1) is also required to support this amount of algal biomass?

2. [30 pts] To fully denitrify 1000 gallons of water with a nitrate-N concentration of 17 mg N l-1 ...

a) how many grams of glucose would it take?

b) how many moles of methanol would be required?

c) how many moles of sulfide would be required?

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