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Explain what volume of 10x transfer buffer stock, 100% methanol and water are added to make one liter of a 1x working solution of transfer buffer?
Determine the value of w (work)? Determine the value of w if the nitrogen is expanded against a pressure of 0.132 bars
Draw the charge on tyrosine among the pH 0and pH 14. Let the ordinate (y axis) be charge and the abscissa (x axis) be pH. Calculate the charge at pH 0, i.e., a very acidic medium?
At 14.0 atm and 25 degrees Celsius a 1.00 mole sample of ammonia in a cylinder fitted with a movable piston expands against a constant external pressure of 1.00 atm.
Determine the final pressure of the gas if the external pressure is 0.20 atm. One mole of an ideal gas undergoes an isothermal expansion at 300 K from 1.00 atm to a final pressure while performing
Determine the molar hear capacity of benzene at constant pressure? It takes 330 joules of energy to raise the temperature of 24.6 g benzene from 21 degrees Celsius to 28.7 degrees Celsius at consta
A solution is produced by dissolving the 10.0 g of KCl in 500.0 g of water. Assume the volume of solution is 0.500 L. Calculate the new vapor pressure of water at 25 C if the vapor pressure of pure
The flask has silvered outer and inner cylindrical walls to reduce radiation heating, Store one liter of Ne(l) in a Dewar flask at its boiling point,27.1k and the total emissivity of silver is 0.02.
Phosphorous and Fluorine both exist as only one natural isotope (19F and 31P, respectively), whereas chlorine has two (35Cl and37Cl; 75% and 25% relative abundance, respectively).
A 0.8870-g sample of a mixture of KCl and NaCl is dissolved in the water, and the solution is then treated with an excess of AgNO3 to yield 1.913 g of AgCl.
Determine the minimum energy (in units of J) needed to totally remove this electron from the ion in its lowest energy state?
A sample of Cs is irradiated with light of wavelength 2.95x 10^-7 m, and electrons are ejected. What is the speed, in ms^-1, of these electrons?
Determine the de Broglie wavelength with these electrons. H atoms in their lowest energy excited state are irradiated with the light frequency 3.510 x 10^15 Hz, causing electrons to be ejected.
Explain what do you have to do with the tube to assure equal pressure? After you have collected the gas, how do you know the pressure inside equals the pressure outside?
Determine the concentration of Cl-remaining in solution at equilibrium, and the solubility of the AgCl. Ten milliliters of 0.20 M AgNO3 is added to 10 mL of 0.10 M NaCl.
Where a and b are constants not equal to zero. Calculate whether this gas has a critical point; if it does, state the critical constants in terms of a and b.
Determine the amount of strain in each conformation in kJ/mol and write down your answer under the appropriate structure.
Determine the numbers of kclo3 are required to form the 2.8L of O2, calculated at stp, according to the following equation? 2KCLO3(S) --> 2KCl(s) + 3 O2 (g)
Determine the shortest and longest wavelengths of light emitted by the electrons in the hydrogen atom that begin in the n= 5 state and then fall to states with the smaller values of n.
The molar heat capacity of water is 75.3 J /K.mol and the molar heat of vaporization of water at 373 K is 40.79 kJ /mol. Assume the molar heat capacity to be temperature independent and ideal gas be
What does this tell you about the electronic and geometric structures of these complexes? Why is the spin-only formula so precise in these cases?
The density of the aluminum is 2.70g -mL. A perfect cube of aluminum metal was found to weigh 20.00g. Determine the dimensions of the cube?
What is the density of the carbon nucleus when the volume of the nucleus of carbon atom is about 9.9 x10-39 mL. The molar mass of the carbon is 12.00 gmol-1.
The change in entropy for the dimerizaton reaction 2NO2 ->N2O4 is negative. Yet it is observed to occur without any external driving force. How could you test your hypothesis? How could
Explain what mass of Sodium Sulphate (Na2 SO 4) is required to form the 500.00 mL of a solution that is 125 ppm in Na + . Assume density of 1.00 g/mL