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Describe the main components of the Liquid Chromatography-Mass Spec and how they are used in sample identification. (Imagine that you follow the sample through the LC-MS: describe what is happening at each step)
How many molecules of carbon dioxide are produced when 129 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
A 15.6 mL sample of a 0.387 M aqueous hydrocyanic acid solution is titrated with a 0.346 M aqueous barium hydroxide solution. What is the pH at the start of the titration, before any barium hydroxide has been added
15.0 moles of gas are in a 8.00 L tank at 21.0C. Calculate the difference in pressure between methane and an ideal gas under these conditions
What is the maximum possible number of electrons in a ground-state carbon atom that have ml = 0
What is the complete ionic equation for the reaction of K with H2O. Identify the reducing and oxidizing agents and the oxidation
chromium metal can be produced from the high temperature reaction of cr2o3 with silicon by the following reactioncr2o3s
Calculate weight percent of Fe in ore with .4919g of sample with 11ml of .25M Sn2Cl (56.5010g) and 10mL of .25M Hg2Cl (67.8644g) as analyte titrating 1.0058g of potassium dichromate diluting with water
A "free" element A monoatomic ion Part of an ionic or covalent compound Part of a polyatomic ion I know that H and O's numbers can change depending on how they are bound to other elements, but usually H is +1. However a more simple way to memorize..
Calculate the standard potential for this reaction. Normally, X is Fe. Here it is some unknown metal, allowing for somewhat random values for ΔGo.
Use the dipole moments of and ( HCl= 1.08, Hf= 1.82) together with the percent ionic character of each bond ( HCl= 20% ionic, HF= 45% ionic) to estimate the bond length in each molecule.
According to the following reaction, how many grams of mercury will be formed upon the complete reaction of 25.6 grams of mercury(II) oxide
Kb for NH3 is 1.8 x 10^-5. What is the pH of a 0.35 M aqueous solution of NH4Cl at 25.0 degrees C? NH4 (aq) NH3(aq) + H+ +Cl-(aq)
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