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A good yield of photosynthesis for agricultural crops in brightsunlight is 20kg of carbohydrate (for example, sucrose) per hectareper hour. (1 hectare = 104 m2.) The netreaction for sucrose formation in photosynthesis can be written
12CO2(g) + 11H2O(l) --->C12H22O11(s) +12O2(g)
a) Use standard enthalpies of formation to calculateΔH0 for the production of 1 mol of sucrose at 25 Cby the reaction above.
b) Calculate the energy equivalent of photosynthesis that yields20kg of sucrose (hectare h)-1.
c) Bright sunlight corresponds to radiation incident on the surfaceof Earth at about 1 kW m-2. What percentage of thisenergy can be "harvested" as carbohydrate in photosynthesis?
Calculate the pH of the resultant mixtures: a. 10 ml of 0.2 M Ca(OH)2 + 25 ml of 0.1 M HCL b. 10 ml of 0.01 M H2SO4 + 10 ml of 0.01 M Ca(OH)2 c. 10 ml of 0.1 M H2SO4 + 10 ml of 0.1 M KOH
lots of space between gas particles B. little to no space between gas particles C. nothing about the space between gas particles can be inferred.
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how many pounds of co2 are produced from the complete combustion of 1.00 gal of gasoline? assume that gasoline has the
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How many resonance peaks should be observed in the hydrogen - decoupled C 13 - NMR spectrum of each of the following compounds?
A chemical reaction is found to have an activation energy (Ea = 15 kJ/mol). At a temperature of 505 K, what fraction of collisions have enough energy to exceed the activation energy
When X rays of wavelength 0.093 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2 degrees;. What is the distance between the layers of atoms responsible for the diffraction?
A 64 L sample of dry air is cooled from 137°C to -20.°C while the pressure is maintained at 2.85 atm. What is the final volume
a solution contains 29 g of sucrose c12h22o11 a nonelectrolyte dissolved in 929 g of water. what is the boiling-point
WJCI operates at a frequency of 1460. kHz. What is the minimum height (m) of the antenna that WJCI (sports radio) must have?The speed of light, c, is 2.998 x 108 m/s.
How much heat energy, in kilojoules, is required to convert 73.0 g of ice at -18.0 0C to water at 25.0 0C ?
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