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A mixture containing 80.0 nM iodoacetone (designated A) and 64.0 nM
p-dichlorobenzene (designated B) gave the relative detector response (peak area of A)/(peak area of B) = 0.71 in a chromatography experiment. A solution containing an unknown quantity of A plus 930 nM B gave a relative detector response (peak area of A)/(peak area of B) = 1.21. Find the concentration of A in the unknown.
For fully protonated (99%) benzoic acid in solution write the henderson-hassalbach equation and calculate the pH.
What are the relative percentages of hydrogen cyanide (HCN) and cyanide ion in a dilute aqueous solution at pH
Calculate the heat that must be supplied to 12.40 g of Ne(g) at 0.150 atm to raise its temperature from 25.0°C to 51.0°C under the following conditions
What is the wavelength of light in unites of nm emitted when the elctron in a hydrogen atom undergoes a transition from level 7 to level 1
A 32.65-g sample of a solid is placed in a flask. Liquid toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.00 ml.
Assuming the multiple internal reflections depicted below, what is the effective path length (um) for measurements in which the sample completely covers the crystal's upper face?
Potassium hydroxide and phosphoric acid react to form potassium phosphate and water according to the equation. 3KOH(aq)+H3PO4(aq)---->K3PO4(aq)+3H2O(l)
the reaction between all trans lycopene and iodine. Write a feasible mechanism.
What amount of H2 (in moles) is needed to inflate it to 1.0 atm in an ambient temperature of 25°C at sea level? mol. What mass can the balloon lift at sea level, where the density of air is 1.22 kg m-3? kg
An excess of NaOH is treated with 1.1L of dry HCl gas (measured at STP). What is the weight of NaCl formed?
Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the \rm ^14C has decayed to 1/32.0 of the original amount. How long ago was this plant alive
Give explanation for arrangements how you decide the boiling points comparison - Arrange all these compounds in order of increasing boiling points
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