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Calculate the number of moles of Cl atoms in 1.81×1024 formula units of magnesium chloride,MgCl2 . Express your answer numerically in moles.
Write the complete molecular formula and then completes ionic equations. Then write the net ionic equation.
An experiment requires 43.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
Need to make an aqueous solution of 0.233 M potassium iodide for an experiment in lab, using a 250 mL volumetric flask. How much solid potassium iodide should you add?
why do you suppose it is that you did an oxidation-reduction titrattgn to determine its concentration instead of an acid-base titration?
How many ppm Pb2 ion are contained in this solution? How many ppm of nitrate ion are contained in the same solution?
The heat of fusion of thallium is 21 j/g, and its heat of vaporation is 795j/g. The melting anf boiling points are 304 degress celcius. The specific heat of liquid thallium is 0.13 j/g*c.
Write a chemical equation for the formation of methionyl glycine
Compare the rms speeds. Compare the average kinetic energy. -Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than Sample B
Write a detailed sheet/ flow chart for the isolation and purification of 1-bromobutane. Designate how each minor-product is removed form the major product and which layer holds the product in each experimental step performed.
What is the pH of a solution resulting from the dissolution of 2.09 g of NH4Br in water to form 0.371 L of solution
Complete and balance the following equations, and identify the oxidizing and reducing agents. Recall that the O atoms in hydrogen peroxide, H2O2, have an a typical oxidation state.
Consider the reaction of Al and Al+3 and Mg and Mg+2. If the Al+3 is 0.005 M and the Mg+2 is .40 M what is the potential energy. What is the Keq. What is the Gribbs Free Energy
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