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If you have 1 gram of (-) ethyl lactate and purify it with an enantiomeric excess of 85% yields, wihout any loss of material. How many grams of the (+) enantiomer were separated?
what polymer is made from the monomer vinylidene chloride
In 1774, Joseph Priestley discovered that mercury(II) oxide decomposes on heating to elemental mercury and a gas, later called oxygen. If 56.0 g of mercury(II) oxide is heated and 26.0 % of it decomposes,
Write the structures of the products you would expect to get if you react N-cinnamaldehyde-m-nitroaniline with catalytic hydrogenation (that means adding H2 and Pt or Pd).
How many grams of Fe2O3(s) are produced from 500.0 g of FeS2(s) and 400.0 g of oxygen gas?
Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.
the air in the laboratory was measured with a barometer to be 7.20 x 10 squared mm Hg. what is the laboratory air pressure in atm.
assuming that the gas behaes ideally. Then repeat the calculation by using the van der Waals equation
When 83.6 joules of heat is added to 2 grams of water at 10 degrees Celsius, the temperature of the water increases to what value?
What is the percent purity of the calcium hydroxide if the titration requires 7.81 mL of the acid to reach the endpoint?
Volume of acid (HCl) used= 14.1 mL ;Volume of base (NaOH) used= 22.4 mL; Molarity of standard base (NaOH)= 0.20 M What is the molarity of the acid solution?
what effect does increasing the temperature have on equilibrium? what effect does adding a catalyst have on equilibrium?
A chemist wants to prepare 0.48 M HCl. Commercial hydrochloric acid is 12.4 M. How many milliliters of the commercial acid does the chemist require to make up 1.48 L of the dilute acid?
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