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1) How many separation techniques are used in lab for Limiting reactants and percent yield?
2) If you forget to use the hydrate molar masses of the reactants, and use the regular molar masses instead, will the calculated % yield be too low, too high or unchanged. Explain your answer using complete sentences.
When 20.0 grams of water is cooled from 20.0 Celsius to 10.0 Celsius, the number of Joules of heat released is
Given the values of So given below in J/mol K, calculate the value of DSo in J/K for the combustion of 1 mole of ethane to form carbon dioxide and liquid water.
sketch the corresponding Gibbs free energy curve showing all phases that appear on the sketch. Indicate the equilibrium phase compositions.
Which is the best acid to use in the preparation of a buffer with pH = 9.3?
Compounds containing carbon-carbon triple bond undergo the Diels-Alder reaction. Formulate the product formed by the reaction of
The specific heat of ethylene glycol is 2.42 J/g-k. How many J of heat are needed to raise the temperature of 62.0 g of ethylene glycol from 13.1 Celsius to 40.5 Celsius
A tank with a flat bottom of area A and vertical sides is filled to a depth h with water. The top of the water is at atmospheric pressure. (a) What is the absolute pressure at the bottom of the tank. (b) How high could a faucet be placed before no..
Draw a dilution scheme that would produce countable plates if the original culture has 4,730,000 viable cells/mL.
A researcher suspects that the pressure gauge on a 49.9-L gas cylinder containing nitric oxide is broken. An empty gas cylinder weighs 135 lb. The weight of the partially full cylinder is 164.2 lb.
when performing a friedel-crafts alkylation reaction not only does one have the problems of multiple alkylation and
The Solvay process for the manufacture of sodium carbonate begins by passing ammonia and carbon dioxide through a solution of sodium chloride to make sodium bicarbonate and ammonium chloride
nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3.
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