Calculate the molality of urea in the solution
At 27 degrees celsius, the vapor pressure of pure water is 23.76 mmHg and that of an aqueous solution of urea is 22.99 mmHg. Calculate the molality of urea in the solution.
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What effect on the value of Ca(OH)2's Ksp (6.5x10^-6 ) would sucking up some suspended calcium hydroxide solid have. Would the Ksp value be higher or lower than the normal value. Why
Calculate E°cell for the reaction between iodine and magnesium. I2(s) + Mg(s) Mg2+(aq) + 2 I-(aq) Use data from a table of standard reduction potentials as needed. possible answers are
what is the Hvap of a liquid that has a vapor pressure of 616 torr at 84.1 c and a boiling point of 95.5 c at 1 atm. (answer in J/mol)
What is the pH of a solution made by mixing 100.00 mL of .20 M HCl with 50.0 mL of .10 M HCl. Assume that the volumes are additive
Calculate the pH of a solution formed by mixing 40.0ml of 0.1000 M HCl with 39.95ml of 0.1000 M NaOH and then diluting the entire solution to a total volume of 100ml.
Metallic iron has a bcc structure at 20 C and a density of 7.8 g/cm3. What is the length of the side of the unit cell for iron and what is the atomic radius?
which gas has particles with the slowest average speed at 28 C? 1- Carbon dioxide 2- Sulfur trixoide 3- Sulfur hexafoluride 4- Hydrogen choride 5- Helium
If 5.00 g of Cl2 gas is bubbled into one NaI solution, and 5.00 g of liquid bromine is added to the other, calculate the number of grams of elemental iodine is produce in each case.
NO(g) + O2(g)-------- 2NO2 0.85 mol of NO is mixed 0.494 mol of O2 Calculate the number of moles of NO2 produced and Limiting reactant
Calculate the average atomic mass in units of amu for iron (Fe) given that the naturally occurring element exists mainly as a mixture of Fe-56 (91.754%0), Fe-54 (5.845%), and Fe-57 (2.119%). Does your value agree with that shown in the periodic ta
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