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The specific rotation of compound X is +15.2 degrees. A mixture of Compound X and its enantiomer are placed in the polarimeter and the observed rotation is -5.1 degrees. Which enantiomer is in excess (+ or -)? Calculate the enantiometric
A gas weighing 33.62 g occupies a 10.00 liter flask at 27oc and 730 torr of pressure. what is the molar mass of the gas?
when 50.0 g of Copper are reacted with silver nitrate solution Cu + 2AgNo3 - Cu(No3)2 +2 Ag 148 g of silver are obtained. what is the percent yeild of silver obtained?
What is the concentration of iron in the steel sample? Express your answer as grams of Fe per grams of steel (g Fe2 / g steel).
Hydrogen fluoride behaves as a weak acid in solution. Two equilibria influence which fluorine containing species are present in solution.
The sample required 3.7 mL of 0.0013 M NaOH to titrate the sample to neutrality. What was the pH of the gastric juice? Hypochloridia is defined as having a stomach pH greater than 4. Was the patient suffering from hypochloridia?
The final temperature of the system was found to be 28.4 C. Calculate the specific heat of the metal. The heat capacity of the calorimeter is 14.4J/C.
What is the vapor pressure of pentane in this solution at 25°C? The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
When one mole of benzene (C6H6) undergoes complete combustion, 3,170 kJ are released. Calculate the combustion energy of 0.350 kg of benzene?
In the lower troposphere, ozone is one of the components of photochemical smog. It is generated in air when nitrogen dioxide, formed by the oxidation of nitrogen monoxide from car exhaust, reacts by the following mechanism.
How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 10.0 L of H2 gas if the pressure of H2 is 769 torr at 28.0°C?
The initial concentration of lead(II)nitrate is 0.250M. and we used 1.00 ml. the lead(II)nitrate was titrated with 7.96 ml of 0.0500M of potassium iodide.
Use the Rydberg equation to calculate the wavelength in nanometers of the spectral line of hydrogen for which n2 = 4 and n1 = 2.
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