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The dissociation constant of the weak acid HF IS Ka+ [H+][F-]/[HF]. If at equilibrium the concentrations of H+ and F- are each 2.6 X 10-3M and the concentration of HF is 0.010 M, what is Ka for HF?
The reaction between HCO-3 and its conjugate acid creates a very imortant buffer in your blood. explain what a buffer does
The total pressure of argon is 231mmHg. What mass of nitrogen is present in the sample?
You decide to use gel filtration. This works brilliantly and you determine that your protein is 80kDa at the same time. But wait! The gene that corresponds to HMD predicts a protein of only 38kDa. What are two potential causes of this discrepancy?
Compute the energy separation in joules, kilojoules per mole, electron volts, and reciprocal centimeters between the levels (a) n = 3 & n = 1 (b) n = 7 & n = 6 of an electron in a box length 1.50 nm.
Solve for the total moles, then the total pressure of the mixture using the Ideal Gas Law. Next find the mole fraction of Argon and solve for partial pressure of Argon.
The energy from condensing steam water is used to melt ice at 0 degrees Celsius. How much ice can be melted by condensing 1.0 kg of H2O vapor? (Delta H fus of ice= 6.01 kj/mol) (Delta H vap of water = 40.7 kj/mol)
Given N2 (g) + 3 H2 (g) ? 2 NH3 (g), which scenario will allow you to eventually reach an equilibrium mixture involving these chemicals. Place only H2 into a sealed vessel.
For each of the pairs of elements below give the formula for the simplest compound to be formed from them and explain the basis of your decision and note if the bond
how much of a 6 m na2co3 stick do you need to make 100ml of a 10 na2co3 working solution. describe how you would make
The conjugated system of a retinal consists of 11 carbons atoms and one oxygen atom. In the ground state of retinal. each level up to n=6 is occupied by 2 electrons.
Based on the composition and the proton nmr observations, show by the appropriate crystal field splitting diagrams what the static ground state structure must be.
Define the gasoline tank of an automobile contains 81 kg of gasoline. State the gasoline combines with 324.0 kg of oxygen. Explain what is the total combined mass of the carbon dioxide also water produced by combustion in the engine
If a 25.0 mL sample of sulfuric acid is titrated with 50.0 mL of 0.200 M potassium hydroxide to a phenolphthalein endpoint, what is the molarity of the acid? H2SO4(aq) + 2 KOH(aq) ? K2SO4(aq) + 2 H2O(l) Answer 0.300 M 0.200 M 0.150 M 0.400 M 0.100..
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