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Question- What is the vapor pressure, in mmHg, of a solution prepared by dissolving 3.00 * 10^2 g of urea (NH2)2CO (a nonvolatile solute) in 9.00 * 10^2 g of water at 63.5 oC. The vapor pressure of water at 63.5 oC is 175 mmHg.
Answer showing how to make each solution will get rated
What mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.850 L of 0.190 M NaI? Assume the reaction goes to completion.
Explain why C-H single bond stretching is observed in the functional group (higher energy) region of the IR, but the absorptions corresponding to other single bond stretching vibrations
Radical chlorination of pentane is a poor way to prepare 1-chloropentane but radical chlorination of a neopentane, (CH3)4C, is a good way to prepare neopentyl chloride
the mean activity coefficients for aqueous solutions of NaCl at 25C are given below. Confirm that an improved fit is obtained with the extended law
how many atoms are on the surface of the particle? What fraction of the gold atoms in the particle are on the surface?
a experiment would also work using another reactive metal such as zinc.If you had used the same number of grams of Zn as you did Al in this experiment,would you have obtained more or less hydrogen. Illustrate with an equation and calculation
Compute the molar concentration of Cu2+ for a solution prepared by mixing 25mL of 0.10 M CuCl2 with 25mL of 0.20 M NaOH.
An experiment identical to the one you just preformed is done by another student.except the amperage is continuously increased while the sulfuric acid concentration is kept constant
Question- What is the maximum volume of 4.9E-5M K2CrO4 that, added to 17.0ml of a solution that is 8.6E-5M Ba(NO)2 and 5.4e-6 M Pb(NO3)2, will precipitate PbCrO4 bit not BaCrO4? For PbCrO4, Ksp=1.8e-14 and for BaCrO4, Ksp=1.2e-10
a sample of nitrogen gas is contained in a pistol with a freely moving cylinder. at 0.0 c the volume of the gas is 375
A balloon was filled to a volume of 2.50 \rm L when the temperature was \rm 30.0^{\circ}C. What would the volume become if the temperature dropped to \rm 11.0^{\circ}C
Coniine, a toxic substance isolated from a poison hemlock, contains only carbon, hydrogen, and nitrogen. Combustion analysis if a 5.024mg sample yields 13.90mg of CO2 and 6.048mg of H2O. What is the empirical formula for Coniine
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