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Gallium crystallizes in a primitive cubic unit cell. The length of the unit cell edge is 3.70A. The radius of a Ga atom is how many A
calculate w and delta e when one mole of a liquid is vaporized at its boiling point (80 degrees celscius) and 1.00 atm pressure. Delta H vaporization for the liquid is 30.7 kJ/mol at 80 degrees celscius.
Based on Reference Table G, what is the maximum number of grams of KCl(s) that will dissolve in 200 grams of water at 50 Celsius to produce a saturated solution?
Calculate the Gibbs free energy (in kJ/mol) at 80 degrees celsius. Assuming that the change in enthalpy is negligible over this temperature range
Calculate the pH of a 0.02 M solution of oxalic acid (H2C2O4). Ka1 = 5.9 x 10^-2, Ka2 = 6.4 x 10 ^-5. Calculate the concentration of oxalate ion, (C204^2-) in the solution
To find the pKa of X-281, you prepare a 0.087M test solution of X-281. The pH of the solution is determined to be 2.40. What is the pKa of X-281?
what is the volume in milliliters of 20.0 g of acetone if the density of acetone is .791 g/ml?
The substitution reaction of H2S-BH3 with NH3, which generates 2 product molecules, assuming that no species exceeds the octet rule. Given the following information:
Identify the general outer electron configuration for each group of elements shown in this periodic table outline.
Using Slater's rules, calculate the relative effective nuclear charge on a 3p electron in : a)aluminum and (b) chlorine. Explain how results relate to:-the relative atomic radii of the two atoms
Show two different ways to make methyl propionate, using methanol, propionic acid and other necessary reagents The methanol and propionic acid do not have to both be used in the first step.
A sample of chlorine gas at a pressure of 420 mm Hg and in a volume of 3.50 L was heated from 18.0oC to 45.0oC after being transferred to a container of volume 2.35 L. The pressure in this new container should be about
How much water would you have to drink to meet your daily fluoride requirement of 0.5 mg.day?
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