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If the photosynthesis portion of the carbon cycle represents the world's capacity for generating biofuels (in addition to supplying food) what percentage of the world's biomass production would be needed to displace the 6 Gt/yr fossil fuel usage?
Imagine that you have a 5.50 L gas tank and a 2.00 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch
The solubility of compound A in ethanol is .8g/100 mL at 0 degrees and 5.0g/100mL at 78. What is the minimum amount of ethanol needed to recrystallize a 12.0g sample of compound A
If the value of overall energy change of CsF(s) is +537.2 KJ/mol, and CsF2(s) is -1635.8 KJ/mol, which compound is more likely to form in the reaction of Cesium with flourine
When a 4.25g sample of solid ammonium nitrate dissolves in 60.00g of water in another insulating calorimeter the temperature drops from 21.0450C to 16.8700C. What is the (delta)H for the dissolution
Calcultate what is the value of enthalpy H reaction If the temperature increased from 35.0 degree celsius to 76 degree celsius and the heat capacity of the calorimeter = 23.3kj/c ? (the molar mass of C2H5OH = 46.07g/mol. )
What is the theoretical yield (in grams) of the precipitate when 22.35 g of barium nitrate reacts in solution with 11.37 g sodium carbonate
Consider a situation in which 161g of P4 are exposed to 176g of O2. A)What is the maximum amount of P2O5 that can theoretically be made from 161g of P4 and excess oxygen
For the reaction PCl5-> PCl3+Cl2 kp= 26.03 at 800K. calculate the equilibrium partial pressure for the reactant and product if the initial pressures are PPCl5= .54 atm and PPCl3= .37 atm.
Estimate the equilibrium constant for the weak base C6H5CH2NH2, if a 4.53×10-1 M aqueous solution of C6H5CH2NH2 has a pOH 4.84 (make an exact calculation assuming that initial concentration
upon evaluating the contents of a solution, declared that it was a 32 molar solution of ethanol in water. Why is this incorrect?
A 32.85-{g} sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 54.00 mL. The solid and toluene together weigh 58.88 g. The density of tol..
Calculate the molar concentration of HCl in a solution that has a specific gravity 1.185 and is 36.5% (w/w). Prepare from this bottle 1 L of 0.1 HCl solution. 25 mL of this solution titrated with 30 mL of NaOH.
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