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Describe how you would prepare the following aqueous solution: 230 g of a solution that is 0.60 molal Na2CO3 starting with the solid solute.
Suppose that 1.06 g of rubbing alcohol (C3H8O) evaporates from a 64.0-g aluminum block. If the aluminum block is initially at 38°C, what is the final temperature of the block
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 1-bromopropane. Draw the chemical structure of the alkene that you could make using these reagents in a synthesis that involves the Wittig reaction.
When the temperature is increased from 164.5°C to 179.0°C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
dissolved in enough water to produce 162.5 mL of solution and that 18.8 mL of this solution is titrated to the stoichiometric point with 14.6 mL of 0.0307 M HCl(aq). What is the percentage purity of the original sample?
Choose one of the iron-sulfur electron transfer proteins described in the text. Please draw the structure of the iron-sulfur active site, indicating the amino acids tethering the FeS core to the protein
HCl solution is added to 100. mL of buffer solution which is 0.10 M in NH3 and 0.1 M in Nh4Cl, what will be the pH of the new solution?
A gas measures 180. ml. at 870C and 800. mm Hg. Find its volume at standard temperature and 800 mm Hg of pressure.
Cadaverine, a fould smelling substance produced by the action of bacteria on meat, contains 58.55% C, 13.81% H and 27.40% N. Its molar mass is 102.2 g/mol.
The half-life of radon-222 is 3.8 days. How much of a 100 g sample is left after 15.2 days?
The Dumas method is used to analyze an unknown substance. 0.500 g of liquid was place in the 800.0 mL bulb. When heated to 68.7 C, the liquid vaporized, and the pressure was measured to be 154.5 mmHg.
Based upon what you know about acids and bases, and given that manganese will be reduced by sodium bisulfite, make a prediction about how the oxidation-reduction reaction will be affected by acidic
At a particular temperature, K 3.75 for the reaction SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.800 M
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