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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?
Water can be separated into hydrogen and oxygen gases by using electricity to break the bonds in a process called electrolysis. The reaction is:
Calculate the concentration of the hydronium ion in a 3.433 * 10^(-2) M solution of potassium perchlorate acid to the correct number of significant figures or decimal places.
When a sample of H2S(g) (9.811 mol) is placed in 180.0 L reaction vessel at 724.0 K and allowed to come to equilibrium the mixture contains 0.01627 mol/L of S2(g). What is the equilibrium concentrat
The molar heart of neutralization from hydrochloric acid and sodium hydroxide is -57.3 kJ/mol. Use this accepted value to predict the heat evolved during the neutralization of 655mL of 1.00 M hydroc
Suppose the current flowing from a battery is used to electroplate an object with silver. Calculate the mass (in grams) of silver the would be deposited by a battery that delivers 1.25 A/hr of charg
Consider the reaction below. N2(g) + O2(g) ? 2 NO(g) Part A: How many moles of NO are obtained when 0.032 mol of N2 is completely reacted?
Consider the following reaction. Hydroquinone is the oxidizing agent. Hydroquinone Benzoquinone 2(ag)^+ 2OH^- ---> +2(ag) + 2H2O
A general statement concerning the solubility of organic compounds is: The smaller molecules dissolve best in a solvent with a low molecular weight.
Consider the reaction 2 KClO3(s) ? 2 KCl(s) + 3 O2(g) How many grams of oxygen are produced from the complete reaction of 11.8 g of KClO3?
What is the stoichiometric coefficient for oxygen when the following reaction is balanced using the smallest whole number coefficients?
What is the stoichiometric coefficient for oxygen gas when the following reaction is balanced using the smallest whole number coefficients?C12H26(g) + O2(g) ? CO2(g) + H2O(g)
Calculate the equilibrium pressure of CO2 due to the decomposition of barium carbonate (BaCO3) at 25°C. In atm.
For an enzyme that follows simple Michaelis-Menten Kinetecs, what is the value of Vmax if Vo is equal to 1mmnol -1 minute when [s] = 1/10Km?
Preparation of and alpha, beta-unsaturated ketone via Michael and Aldol Condensation: 6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexanone.
A solution is known to contain Bi3+ ion or Cd2+ ion or both. Describe the test(s) that could be used to seperate and identify these ions. Describe the results you would expect to see for each ion, i
When preparing the solutions for Part A, an aqueous solution of diamine and NaOH is made. Why isn't a solution of NaOH and diacid chloride in cyclohexane made
The rate constant for the first-order conversion of A to B is 3.33hr-1. How much time will be required for the concentration of A to reach 75% of its original value?
Confirm that the z-component of orbital angular momentum is a basis for an irreducible representation of A2 symmetry in C3v.
Baking soda decomposes into sodium carbonate, water vapor and carbon dioxide. how many liters of gas will be produced at 155 C and 753 torr by the complete decomposition of 3.2 g of sodium bicarbona
Cyclopropane, C3H6, is an anesthetic given by inhalation. How many grams are in 0.30 mole of cyclopropane? The sedative Demerol hydrochloride has the formula C15H22ClNO2. How many grams are in 2.2x10^
confirm that the z-component of orbital angular momentum is a basis for an irreducible representation of A2 symmetry in C3v
The rate constant for the first order decomposition of SO2Cl2 is 1.37 x 10^-3 min-1 at a certain temperature. If the concentration is initially 0.500 M, predict it after 300 min.
what is the reaction order? If the unit is M^-1 s^-1, what is the reaction order? Use the rate laws to determine the unit for the rate constant.