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What is the molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6, mol wt = 180 g/mole) in 35.5 mL of solution?
Calculate the molar mass of a gas if 4.40 g occupies 3.50 L at 560 torr and 41°C.
A 1 L solution of 1.5 M acetic acid and 1.5 M sodium acetate has a ph of 4.74. 10 ml of 0.1 M NaOH were added to the solution followed by the addition of 50 ml of 0.02 M HCl.
At 25 degrees Celsius, the reaction: H3O+ + NH3 --> NH+ + OH- is first order in each reactant, and has a rate constant of 4.3x 10^10 M^-1 s^-1
Which statement best desrcibes the energy change as bonds are formed and broken in this reaction ?
Calculate the grams of potassium iodate, KIO3 (FM 214.00) required to react with 25.0mL of a 0.0700M solution of sodium thiosulfate, Na2S2O3
Calculate the number of grams of alcohol present in 1.00 L of 69 proof gin. The density of ethanol is 0.798 g/mL.
What is the enthalpy change when 1 mole of ammonia gas is decomposed into its elements?
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
Why should the flask be immersed in boiling water as much aspossible? What effect will it have in determining the molecularweight? Explain.
What is the molarity of a solution prepared by dissolving 72.0 g of HCI in enough water to make 500 ml of solution.
A healthy stream has an oxygen concentration of 0.00850 g/L. Assuming no biological process affects this concentration, what must be the pressure of oxygen
Calculate the mass percent of nickel (II) nitrate in the solution. Showing how you get the answer is most helpful
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