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Compute the change in pH when 7.00mL of 0.100 M HCl(aq) is added to 100.0mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
Compute the change in pH when 7.00mL of 0.100 M NaOH(aq) is added to the original buffer solution.
Explain why the rates of diffusion of nitrogen gas and carbon monoxide are almost identical at the same temperature.
Silicon tetrafluoride reacts with F- to produce the hexafluorosilicate ion, SiF6 2-. GeF4 behaves similarily, but CF4 does not. (A) Draw Lewis structures for SiF4, GeF6 2-, CF4. What is the hybridization of the central atom in each species
The directions state 'weigh about 5 grams of sodium chloride'. Give minimum and maximum amounts of sodium chloride that would satisfy these instructions.
at 25.0degc a sample of xe gas occupies 550 ml in a piston-cylider apparatus when the external pressure is 353 torr. at
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 2-bromobutane.
A mixture consisting of 0.130 mol N2, 0.041 mol O2, 0.100 mol CH4, and an unknown amount of CO2 occupies a volume of 8.90 L at 25°C and 1.09 atm pressure. How many moles of CO2 are there in this sample
A reaction is carried out in a constant pressure calorimeter. Appropriate measurements are taken as well as the energy for the change is calculated. The amount of heat exchanged under these conditions leads to the computation of which state functi..
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added). The Ka for HOCl is 3.0 x 10-8 M.
How many grams of KOH are required to neutralized 300ml of 5.0 N HN03 solution.
2-Methylhexane demonstrate an intense peak in the mass spectrum at m/z = 43. Offer a likely structure for this fragment.
a) Write the next ionic equations for the precipitation reaction or reactions that occur. b) What are the spectator ions in the solution?
Compare the amount of energy released by the complete combustion of 1 gallon of ethanol with the amount of energy released by the complete combustion of 1 gallon of octane.
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