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Problem- Calculate the amount of heat (in kJ) required to vaporize 2.41kg of water at its boiling point. (Hvap=40.7 kJ/mol at 100C)
Explain each and every step in detail. I need proficient help in the above problems.
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..
Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case.
evaporated the water from NaOH extracts prior to adding acid?
Calculate the pH of a solution that is 0.25M pyridine, C5H5N and 0.75M in pyridinium bromide, C5NHBr. (Kb for C5H5N= 1.7 * 10^-9)
a gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure
A solution of 5.00 g of lauryl alcohol in 0.100 kg of benzene freezes at 4.1C. Explain what is the approximate molar mass of lauryl alcohol. Explain the normal freezing point of benzene is 5.5C, as well as Kf for benzene is 5.12 C/m
A box contains a mixture of small copper spheres as well as small lead spheres. The total volume of both metals is measured by the displacement of water to be 423cm3 as well as the total mass is 4.27kg. Explain what percentage of the spheres are c..
How much heat energy, in kilojoules, is required to convert 74.0 g of ice at -18.0 C to water at 25.0 C ?
In addition to the natural radioactive decay series that begins with U-238 and ends with Pb-206, there are natural radioactive decay series that begin with U-235 and with Th-232. Both of these series end with nuclides of Pb. Predict the likely end..
protein a has a binding site for glucose with a kd of 10-5m.protein b has a binding site for glucose with a kd of 10-7
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s
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