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Presume compounds A and B react to form C as shown below. If the reaction forms 6.14g of C, Explain what are the minimum quantities of A and B (in grams) that one would need to use, presuming that the percent yield of C is 100%.
4A (MW=118.34 g/mol) + 6B (MW= 228.62g/mol) -----> 3C (MW= 265.18g/mol)
a gas occupying a volume of 139 ml at a pressure of .970 atm is allowed to expand at constant temperature until the
Barium sulfate, BaSO4, is made by the following reaction: Ba(NO3)2(aq) + Na2SO4(aq) à BaSO4(s) + 2NaNO3(aq).
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
A first order reaction has an activation energy of 65.7 kJ/mol and a frequency factor (Arrhenius constant) of 2.36 x 1013 sec -1. Calculate the rate constant at 18 oC
Which of the following is not an application of colligative properties? A) reducing boiling points of pure liquids at increased altitude B) adding silver to mercury to lower the vapor pressure of mercury C) melting snow by application of salt D) d..
How much energy (in calories) is needed to heat 8.0 cm3 of fat from room temperature (25 c ) to its melting point (35 c )?
The decay rate for carbon 14 in the sample is 14.2 dis/min per graham carbon. In what year was the coffin most likely made? ( Assume the half life of carbon-14 is 5730 years and that the decay rate for carbon 14 in living organisms is 15 dis/min p..
A solution is prepared by dissolving 13.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.00 mL sample of this stock solution is added to 57.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
Why would the cell potential be higher with the addition of 6 M Na2S solution to .001 M of CuSO4 (compared to 6 M NH addition to .001 M CuSO4)
When aluminum is produced by electrolysis we get 5.68 tons of aluminum and 5.04 tons of oxygen. What is the empirical formula of the compound that is being electrolyzed
combustion of 1.031g of a compound containing only carbon, hydrogen and oxygen produced 2.265g if carbondioxide and 1.236g of water. What is the empirical formula for the compound?if the molecuar weight is 180.3g, what is the molecular formula?
the ph of ocean water is about 8.1. if it changes as expected over the next century it may drop by 0.3 to 0.5 ph units.
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