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The common charges of an element can be related to the electron configuration of the element. Why would copper ions have 2 common charges? Explain each of them in terms of the electron configuration.
One piece of copper jewelry at 108 degrees Celsius has exactly twice the mass of another piece, which is at 44 degrees Celsius. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the..
Write out the electron configuration, orbital diagram and note number of valence shell electrons for nitrogen.
1. What is the oxidation number of Sulfur in the ionic compound K2SO4? Explain.
a a 100g of bulk water is dispersed as droplets of radius0.5x10-5 mm. if the surface tension of water is7.2x10-2 nm
When aqueous solutions of sodium hydroxide
What is the percent ionization of cyanic acid (Ka = 2.0 x 10^-4) in a buffer of 0.50 M HCNO and 0.10 M NaCNO?
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 5,284kJ of heat is needed from the combustion, how much carbon (g) must be consumed
Give two reasons why a 100% yield is not obtained in actual chemical manufacturing processes.
What multiple of Ka must the initial concentration of a weak acid exceed, for the initial concentration and the equilibrium concentration to be within 9.86 percent of each other
Calculate the molarity of a solution made by adding 28.4mL of concentrated potassium hydroxide(34.5% by mass, density 1.46g/mL) to some water in volume metric flask, then adding water to the mark to make exactly 250mL of solution.
determine the number of molecules of acetaminophen in a 500 mg
For the reaction 2Mg(s) + O2(g) ? 2MgO(s), how many moles of O2 are required to react completely with 0.0232 moles of Mg
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