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The optical rotation of a sample composed only (S)-1-amino-1-phenylethane is determined. [a]obs = -157.0 degrees. If the cell path length was 1.0 dm and the concentration of (S)-1-amino-1-phenylethan in the sample was 5.2 g/mL, what is the specfic observed rotation? Choose the best answer.
a) -16.1 degrees
b) -30.2 degrees
c) -35.8 degrees
d) -43.2 degrees
e) -56.1 degrees
For AuCl, Ksp = 2.0 x 10-13 at 25°C. What is the solubility of AuCl at this temperature?
Concentrated acids and bases may fall outside this range. Calculate the pH of hydrochloric acid, if the solution is sold as 37 % by weight (37 g HCl / 100 g solution) with a density of 1.18 g/mL.
Compute the band gap for this semiconductor material after Consideing an intrinsic semiconductor with a conductivity σ that triples between the temperature 27 degree Celsius and 57 degree celsius.
The oxide of 'N' element contains 33.33% of the element .The same element forms a chloride whose Vapour density is 59.25.
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits
Calculate the heat released when 1.95 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
Critical constants of a gas with van der Waals parameters, Estimate the critical constants of a gas with van der Waals parameters
Suppose you have a stoppered ?ask containing CO2 gas at room temperature and pressure. If the volume of your stoppered ?ask is 300.0 mL, the pressure in the room is 770 mm Hg, and the temperature in your work area is 22.0°C, how many moles of CO2 ..
How many moles of hydronium ion are neutralized by one teaspoonful of Extra strength Maalox plus?
If 69.5 kJ of heat is applied to a 1032 g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
Calculate the molarity and the molality of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Magnesium oxide reacts slowly with water to form magnesium hydroxide. What would be the effect on the observed value for ∆H_rxn for the reaction of MgO if 10%
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