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Suppose In the titration of an impure sample of KHP, it was found that 36.0mL of .100M NaOH was needed to react completely with 0.765g of sample. Explain what is the percentage of KHP in this sample?
Two solution are mixed, Zn(NO3)2 and Na2CO3. If at the instant of mixing the [Zn(NO3)2]=3.7x10^-5M and [Na2co3]=1.5x10^-6M will a precipitate form?
What is the minimum number of liters of air that must pass over a sample of the compound at 25oC to vaporize 1.0 mg of it? Hint: You know the Vapor Pressure from question "a" above and you are given the temperature and mass.
Use equations to obtain expressions for the following partial derivative for a diatomic ideal gas, assuming that the temp of the system is sufficiently low that only translational and rotational motions are thermally active.
A chemical reaction takes place in a container of cross-sectional area 100 cm2 As a result of . the reaction, a piston is pushed out through 11 cm against an external pressure of 689 torr. What is the value for w for this reaction?
A cloud bank moving across the ocean at an altitude of 2000m encounters a coastal mountain range. As it rises to a height of 3500m to pass over the mountains, it undergoes an adiabatic expansion.
How many kilojoules a) are required to raise the temperature of 33.4 g CH3CH2OH(l) from 19.6 to 49.8 C b) must be removed from a 325 g sample of CH3(CH2)6CH3(l) to lower the samples temperature from 82.4 to 31.6
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
What is the electron configuration of the atom in the third row of the periodic table that has the smallest ionization energy?
In biochemistry laboratories, solutions of sucrose (table sugar, C12H22O11) are used in high speed centrifuges to separate the parts of a biological cell. How many liters of 3.48 M sucrose contain 170. g of solute
find the methylmercury CH3Hg concentration in fish at which regular consuption at 50g/day becomes unacceptable health risk. use epa reference dose for methylmercury
A 500mL solution contains 1.68g NH3 and 4.05g (NH4)2SO4. How many mL of 12M HCl is needed to change the pH to 9.00?
Calculate the mole fraction of toluene in the solution that contains 48.0 g toluene and 139 g benzene.
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