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Why are d orbitals not included in valence electron configuration?
when 9.00 g of Al react with an excess of H3PO4, 30.0 g of AlPO4 are prodecued. What is the percentage yield of this reaction?
Which of the available reagent(s), if any, will oxidize Fe(s) while leaving Cu(s) unreacted? If none of the available reagents can be used for this purpose, then identify another reagent from the table that could be used. For each reagent you've i..
Problem- What is the structure of a hydrocarbon that shows a molecular ion at m/z = 182 in the mass spectrum and has the following 1H NMR spectrum
a sample of chloroform is found to contain 12.4 g of carbon 109.9 g of chlorine and 1.04 g of hydrogen. if a second
When a substance is heated it glows and emits a certain amount of radiant energy that corresponds to particular energies in the electromagnetic spectrum.
Phosphate systems form necessary buffers in organisms. Compute the pH of a buffer made by dissolving .8mol of NaOH in .5L of 1M H3PO4.
During a period of discharge of a lead-acid battery, 404 g of Pb} from the anode is converted into PbSO_4 (s). What mass of PbO_2 (s) is reduced at the cathode during this same period. Also How many coulombs of electrical charge are transferred fro..
How many moles of phosphine (PH3) are produced for every 4.0 moles of hydrogen that react according to the chemical equation below?.
Compute the expected pH when 0.5mL of 0.1 M HCL is added to 30.0mL pure water. Do the same computation when the same amount of HCL is added to 30.0mL of your original .05M buffer. Compare the compute pH to the actual measured pH.
Suppose the equilibrium constant Kc for the reaction below is 1.70x10-1 define what will be the equilibrium pressure of NO if the partial pressure of all three are all 3.15 x 10-3 atm
Then, if the speed of a reaction becomes approximately double, when the temperature is raised by 10 ° C, what is the activation energy of this reaction (expressed in kJ mol -1), in case the initial temperature is 27 ° C?
What are metals? What are non metals? What are metalloids? Explain the reactivity of metals in their respective groups. How the non metals are subdivided based on their reactivity in periodic table? Explain the amphoteric nature of Beryllium based on..
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