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Polonium metal crystallizes in a lattice which contains only one Po atom per cubic unit cell. The radius of polonium atom is 1.67 A. Calculate the density of the polonium metal.
How many moles of Na2SO3 were added to the calorimeter cup if 30.0mL 0.50 M NaOCl and 70.0mL 0.50 M Na2SO3 were combined?
The exothermic chemical reaction CO(g) + H2O(g) CO2(g) + H2(g) has Kc = 0.034 at 25°C. We currently have a flask containing all the components listed in this equation at equilibrium at 25°C. Subsequently, we will either (1) add some H2 to the flas..
What is the relative spread (in ppt) of the two values? (Note: ppt is part per thousand. Keep one decimal place in your answer.)
A student followed the procedure of this experiment to determine the solubility product of zinc(II) iodate, Zn(IO3)2. Solutions of ZN(NO3)2 of known initial concentrations were titrated with 0.200 M KIO3 solutions to the first appearance of a whit..
When making 2-hexene, NaH is the only base that can cause the elimination process from 2-chlorohexane to make this product. Dan thinks that this reaction would be best run in Acenotrile,
Using the balanced equation of BaCl2 + 2AgNO3 => 2AgCl + Ba(NO3)2, answer the following questions: What mass of AgNO3, in grams, is required for complete reaction with 0.156 g of BaCl2? What mass of AgCl is produced?
Calculate the volume of a pre-made solution of 1-decene (120 ?L) in absolute ethanol (250 ?L) that will afford 0.76 mmol of 1-decene
In the diels-alder reaction of cyclopentadiene and maleicanhydride what are the two side reactions of cyclopenadiene
Calculate the initial rate of the NO reduction at 1100 K if 400.00 mg of NO and 600.00 mg of H2 are confined to a 5.00 L reaction vessel.
a sample of 1.42 g of helium and an unweighed quantity of oxygen are mixed in a flask at room temperature. the partial
Based on the Henderson-Hassalbach equation how many mmols of Tris-HCl are there in a 100 mL of a 100 mM Tris-HCl buffer solution at pH 8.1? Note that the 100 mM refers to the sum of Tris and Tris-HCl concentrations. Answer in mmols
Calculate the pH of a 450 mL solution formed by adding 210 mL of .2000 M acetic acid to 240 mL of .1200 M potassium hydroxide.
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