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Identify the Qual I cation(s) that is(are) confirmed present in a reference solution by: the formation of a precipitate? the color of a soluble complex ion? the characteristic color of a flame test? the evolution of a gas?
what is the expected boiling point of a brine solution containing 30.00g of KBr dissolved in 100.0g of water?
what is the lewis structure and molecular geometry of pernitrate and carbonate ion?
tap water with a Cl- ion concentration of 1*10^-5 mol/L? Ksp=1.77*10^-10
A container of water is heated from 23.5C to 85.0C. This process requires 21,900 Joules of heat. Calculate the mass of the water. (c=4.184 J/g-C)
A reaction 3A2+ + 2B --> 3A + 2B3+ is used to make a battery. The standard Gibbs free energy change for the given reaction is -690 kJ. What is the standard potential (E ) for the battery.
estimate the minimum uncertainty in the position of an electron of mass 9.109*10^-31 kg if the error in its speed is 3*10^5 m/s
A piece of metal of mass 27 g at 99?C is placed in a calorimeter containing 45.1 g of water at 21?C. The final temperature of the mixture is 38.7?C.
What is the molar mass of the compound? Express your answer to two significant figures and include the appropriate units
Calculate the equilibrium constant K for the isomerization of glucose-1-phosphate to fructose-6-phosphate at 298K .
A company is marketing a photovoltaic cell that it claims has an output of 320 W/m2 when tested at the standard 1000 W/m2 irradiation condition
Propane (C3H8) is widely used in liquid form as a fuel for barbecue grills and camp stoves. For 61.9 g of propane, determine the following. (a) Calculate the moles of compound. (b) Calculate the grams of carbon.
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
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