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Glass cuvette, used for precision measurements in a spectrometer, are marked so that they always have the same orientation in the sample compartment. What error does this minimize and why?
Given that the vapor pressure of pure n-hexane and pure h-heptane at 25 °C are 151.4 mmHg and 45.62 mmHg respectively, calculate the total vapor pressure above a solution containing only n-hexane and n-heptane in which the mole fractio n of n-hexa..
20 millilitres of H2SO4 solution was titrated against 0.2M NaOH and required 12.4 millilitres to reach the end point. calculate the concentration of the H2SO4 solution in (a)Molarity (b) g/l.
Calculate the pH and the concentrations of all species present in a 0.19-M solution. The acid dissociation constants are K1 = 5.9 10-2 and K2 = 6.4 10-5.
Determine the longest wavelenght of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76*10^3 kJ/mol.
if copper has a photoelectric threshold wavelength of 279 nm calculate the velocity ms of the electron emitted when
A sample of N2O3 (g) has a pressure of 0.017 atm. The temperature of (in K) is then doubled and the N2O3 undergoes complete
cu/cu^2+ concentration cell has voltage of .21V at 25 c. the concentration of cu^2+ in one of the other half cell is 1.4E-3M. What is the concentration of{Cu^2 + in the other half-cell
What is the mole fraction of each component if 3.9 g of benzene (C6H6) is dissolved in 4.6. Assuming that this mixture is ideal, that is, it follows Raoult's Law, what is the partial vapor pressure of benzene in this mixture at 50 C
0.375 kg of water are in a well insulated container at 21.3 c. After 4.184kj of heat are added to the water, what is the final water temperature ?
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the 20.0 mL of HNO3 have been added.
Which carboxyl group is more acidic in 3-chlorohexanedioic acid? The 2 carboxyl groups in 3-chlorohexanedioic acid are not equivalent and have different dissociation constants
How would I find the percent yield and theoretical yield if I have 0.76 g of 3-nitrobenzaldehyde to start out with, 0.60mL of acetophenone required for the reaction between p-anisaldehyde and acetophenone
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