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During a chromatography experiment, a student calculated two Rf values. They are A: .62 and B: ,30. The solvent front for the original chromatogram was 12.0 cm. If A and B were run on a second chromatogram and the solvent front was 25.0 cm, how far apart would A be from B?
octane gas reacts wuth oxygen to form carbon dioxide gas and water as a gas. write balanced equation. how many grams of oxygen must react with 50 grams of hexane gas?
What does the magnetic quantum number determine. Check all that apply. A.) the possible number of electrons on particular orbital B.) the energy of an orbital C
Draw a Lewis structure for ClO2. Use formal charges. Can someone give me a good explanation on how to draw this structure in addition to using its formal charges
A sample of 0.05567 mole sodium acetate was dissolved into 150.0 mL of water. If 2.00g of NaOH(s) was added to the solution and allowed to dissolve
The goal of the recrystallization procedure is to obtain purified material with a maximum recovery. For each of the following situations, explain why this goal would be adversely affected.
Water treatment plants commonly use chlorination to destroy bacteria. a byproduct is chloroform- CHCl3, a suspected carcinogen. This is produced when HOCl, formed by reaction of Cl2 and water
Calculate the volume of dry CO2 produced at body temperature (37 degrees Celcius) and 0.970 atm when 24.5g of glucose is consumed in this reaction.
considering the molecule hooh. what happens to the overlap in the sigma bond between the 2 o atoms as one hydroxyl
The activation energy for the reaction is found to be 40 kJ mol^-1. Assume that a simple Arrhenius expression gives the dependence of k upon temperature. The investigator runs the reaction in a container whose temperature is increased to 500 K. Wh..
The Dissolution of lithium iodide is exothermic and the lattice energy is smaller in magnitude than the heat of hydration. Explain why the solution forms and what drives the process
25 ml of naoh 0.16 m is added to 50 ml of 0.1 m hcl. what is the ph of the final solution? what is the concentration of
Identify and describe the structure and function of specialised cells of protection, sensation and secretion in the integumentary system
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