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A 6.0 g sample of [Cu(H2O)4]SO4xH2O (molar mass = 249.68 g/mol) is dissolved in deionized water. If an excess of ammonia is added to the solution, solid [Cu(NH3)4]SO4xH20 (molar mass = 245.61 g/mol) forms. What is the theoretical yield of product from the reaction?
A titration is performed in which 50.0 mL of 0.0463 M acetic acid (Ka = 1.8 x10^- 5) is titrated with 0.1000 M NaOH. Calculate the pH at the beginning of the titration (Vb = 0).
a high-boiling bp 202-204 degrees c burns with a yellow sooty flame. sodium fusion indicated that halogens nitrogen
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 125 for 1.0 of the gas to effuse. Under identical experimental conditions it required 28 for 1.0 of gas to effuse. Calcul..
Assume that we are comparing the membrane fluidity of lipid bilayers. Rank the fluidity of the following bilayers in the order of increasing fluidity. Explain in each case the rationale behind your prediction
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00 kg of water that is at the EPA limit for lead.
A student allowed several air bubbles to enter his eudiometer tube. He ignored the error and proceeded with the experiment. What effect will this error have on his final result? Explain your rationale.
how many ml of concentrated sulfuric acid would be required to mae 1 L of 0.2N solution
Aluminum hydroxide and sulfuric acid reaction, Which reagent is the limiting reactant when 0.450 mol Al(OH)3 and 0.550 mol H2SO4 are allowed to react? How many moles of the excess reactant remain after the completion of the reaction? Please explain..
The vapor pressure of dichloromethane, rm CH_2Cl_2, at 0 rm ^{circ}C is 134 rm mmHg. The normal boiling point of dichloromethane is 40. rm ^C. Calculate its molar heat of vaporization.
Human urine has a normal pH of 6.2. If a person eliminates an average of 1226 mL of urine per day, how many H+ ions are eliminated per week
The solubility of benzoic acid at 0oC is 1.7g/L and at 90oC is 45.5g/L. How much water do you need to dissolve 0.455 g of benzoic acid at 90oC. How much of the original benzoic acid will remain in the solution once the temperature is reduced to 0o..
Write the Net Ionic Equation and determine the standard potential for the reaction between permanganate and tin(II). From the potential
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