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What is a covalent bond and what are the important characteristics of covalent bonds? How are covalent bonds formed? Do some covalent bonds have "ionic character"? Explain.
a beaker containing 250 ml of a 0.500 m solution of acetic acid cooh is added to 125 ml of a 0.850 m solution of sodium
Determine the stiochiometric coefficients for the reaction, (3CaO Al2O3 3SiO2) + a(CaO Al2O3 SiO2)= b(CaO Al2O3 2SiO2) + c(2CaO Al2O3 SiO2)
Explain the indirect role of light reactions Vs Direct role of Calvin cycle reactions in sugar production
How many carbon dioxide molecules are generated by the combustion of one molecule of hexane (C7H14) in ample oxygen?
Calculate the mass (g) of NiS that will dissolve in 1100 mL of 0.169 M NiCl2 solution. The equation represents the solubility process.
For each of the following reactions indicate which substance is oxidized and reduced. Which substance is the oxidizing agen and which is the reducing agent
What volume of glacial acetic acid (d= 1.06g/ml) and what weight of solid potassium acetate are required to prepare 5 liters of 0.2M acetate buffer
Calculate the lattice energy of Na2O for the following data: Ionization energy of Na(g):::495kj/mol, Electron affenity of O(g) for 2e-:::603 kj/mol
A gaseous mixture of and has a density of 1.104 at 445 and 300 . What is the mole percent in the mixture?
a current of 0.50 a passes through a copper ii sulfate solution for 15 min. how many coulombs and electrons pass
combining 0.228 mol of FecO3 with excess carbon produced 13.2g of Fe. Fe2O3 + 3C -> 2Fe + 3CO what is the actual yield of iron inn moles? what is the theoretical yield of iron in moles? what is the percent yield
If the water in a well has 1000.0 mg/L of CaCO3 dissolved in it, How many grams of Na2C2O4 could you mix with 100.0 mL of that water before a precipitate would form
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