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The following charges on individual oil droplets were obtained during an experiment similar to Millikan's determine a charge for the electron (in Coulombs) and explain your answer:
-3.204x10^-19 C -4.806X10^-19C -8.010x10^-19C -1.442X10^-18C
Calculate the wavelength of the light that is absorbed for the electron's transition from n = 5 to n = 6 in Be3+ ion. (ans in nm.)
sulfur dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 179 s for 1.00 L of this gas to effuse. Calculate the effusion time of arsine (AsH3) under identical experimental conditions
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.60 mL of a 0.330 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
sketch the curves for the distribution of energy states and their electron popultaions for a metallic conductor, an insulator
How many liters of oxygen,O2,are required for the complete combustion of 1/2 mole of pentane,C5H12 at standard conditions
1) Suggest a reason why the starting material (trans-1,4-diphenyl-2-butene-1,4-dione) should be recrystallized prior to use in the photochemical isomerization of an alkene.
Calculate the solubility of zinc hydroxide, Zn(OH)2, in 1.00 M NaOH. Ksp = 3.0 × 10-16 for Zn(OH)2, Kf = 3.0 × 1015 for Zn(OH)42-
Which of the following species is present in the greatest concentration in a 0.100 M H2SO4 solution in H2O
Write the equation for the esterification reaction between ethanol and acetic acid (ethanoic acid), Write the equation for the esterification reaction between ethanol and acetic anhydride(ethanoic acid anhydride)
For each of the following reactions, balance reaction, determine the number of electrons transferred in the reaction, and write the equilibrium constant
What is the heat of vaporization of a if 215mol of the liquid required 2040J of energy to vaporize at its boiling point
Calculate the mass percent of a solution that is prepared by adding 61.3g of NaOH to 492g of H2O.
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