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What is the coordination number of each sphere in a three-dimensional, close-packed array of equal-sized spheres?
How many kilojoules of heat are absorbed when 7.20g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?
Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols is burned in air, heat is liberated. Calculate the heats of combustion of these alcohols in kJ/mol.
Calculate the concentration of Cu2+ in a solution prepared by adding 5.2 x 10 -3 mol of CuSO4 to 0.450L of 0.38 M NH3.
An aqueous antifreeze solution is 35.0% ethylene glycol (C2H6O2) by mass.
refer to the given equation as 4NH3(g) + 7O2(g) = 4NO2(g) + 6H2O(g) How many moles of ammonia will be required to produce 13.8 mol of water.
a running track measures 1056 ft per lap. to run 15.0 km how many laps should you run? How do you break the equation down into a solution map?
A gas containing H2S and CO2 is bubbled through methanol at 4 degrees C. From the bottom of the tank to the top, 80% of the H2S is absorbed by the methanol.
Determine the number of moles of O2 produced by the decomposition of 213 g of NaClO3.
Explain what does it mean that a system is in its ground state. What is an operatr for which the wavefunction of such system is the eigenfunction?
What is the pH at the equivalence point? (Kb of NH3 = 1.8 A 20.0 mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCl(aq). What is the pH after the addition of 50.0 mL HCl(aq)?
Write the reaction and predict the major organic products(s) for each of the following reactions. Make sure to consider stereochemistry & regiochemistry, if applicable.
If a sample containing 2.11 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
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