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Question- What mass of oxygen in kilograms is contained in 3.00 gallons of ethanol (C2H5OH)? The density of ethanol is 0.789 g/mL; 1 gal = 3.785 L.
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The room temperature and pressure were 23.6 deg C and 763.4 mm Hg respectively. The residue had a mass of 3.1915 grams. What was the partial pressure of oxygen?
Explain when aqueous solutions of cadmium chloride and sodium sulfide are mixed, a precipitate of cadmium sulfide forms, leaving soluble sodium chloride in the solution. Comprise states in your answer.
Calculate the volume of the NaOH solution needed to completely neutralize the acid in the flask. Calculate the pH for a, the initial acid solution in the flask
you are given 2.56 g of salicylic acid. using the procedure in the lab manual for the synthesis of aspirin you recover
If Barnase is a two-state protein that is denatured in guanidium hydrochloride (GdnHCl). Barnase is 50% unfolded in 3 M GdnHCl, but 99% folded in 0.03 M GdnHCl. If 3 M solution of Barnase is diluted by a factor of 100
How many grams of Ag3PO4 can be produced from the reaction of 2.50 L of a 0.200M AgNO3 with an excess of 0.750 K3PO4 solution according to the following equation?
Using the Arrhenius concept of acids and bases, identify the Arrhenius acid and base in each of the following reactions: 2KOH(aq) + H2SO4(aq) ---> K2SO4(aq) + 2H2O(l)
Ka for HCN is 4.9 × 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide
A 3.50g sample of histidine dihydrochloride (fw 228.08g/mol) in water and diluting to a final volume of 50.00ml. The resulting solution is then titrate with 0.500M NaOH. calculate the pH at each of the following points
Explain what are the mole fraction of NaCl and water (solvent) in a 2.25M NaCl water solution. Density of this solution is 1.086g/ml.
Calculate the mass of methane that must be burned to provide enough heat to convert 151.0 g of water at 43.0°C into steam at 124.0°C.
question explain how the vapor pressure of a compound is related to the liquid-vapor equilibrium and its equilibrium
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