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A cashew nut was burned and determined to have an energy value of 3.5Cal/g. The amount of nut burned was 0.9933g. How many of these nuts would a 67kg person have to eat to obtain enough energy to bike (racing)for 40min?
What is the [OH-] of a buffer that consists of 0.700 M methylamine CH3NH2 and 0.848 M methylammonium chloride CH3NH3Cl? pKb of methylamine is 3.35. Use E notation and 3 significant figures.
In the reaction of lithium, li with nitrogen n2 three lithium atoms react with on nitrogen atom elements lose one electron, atoms of the other element gain three electrons
A buffer, consisting of H2PO4- and HPO42-, helps control the pH of physiological fluids. Many carbonated soft drinks also use this buffer system. What is the pH of a soft drink in which the major buffer ingredients are 8.00 g of NaH2PO4 and 6.70 g..
Can anyone suggest a simple method for the separation of phenol from a solution which contains both phenol and cyclohexanol
calculate the concentration of each diluted reactant in the 50.0ml volumetric flask. then calculate the concentration of each reactant in the reaction beaker before any reaction has occured.
What would you expect to happen if you combined 10.0mL of 10^-2 M acetic acid and 5.0mL of 10^-2 M sodium hydroxide? What would be the concentrations of acetic acid and sodium acetate in this solution
write complete ionic equation to show the reaction of aqueous hg2no32 with aqueous sodium chloride to form solid hg2cl2
Bob dissolved .36 grams of KHP in 15 mL of water. He found out that it required 20 mL of NaOH to reach the endpoint the endpoint of the titration.
The average pH of precipitation in rural areas is 5.80. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere.
What amount of energy is required to completely ionize 6.2 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole?
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K.
Aqueous copper (II) reacts with aqueous iodide ion to yeild solid copper (I) iodide and aqueous iodine. write the balanced ionic equation and identify the oxidiziton and reducing agent
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