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A solution is made by mixing 40.0 mL of ethanol, C2H6O, and 60.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?
Using the ideas regarding the effect of basic anions on salt solubility. Which order is correct for the solubility and the Ksp.
A student in a hurry decides to let the solvent travel only half way up the chromatographic paper in chromatogram 2. predict the effect of this procedural change on the resultion
calculate the molarity of a solution prepared by diluting 1.20 x 10^2 ml of 2.725 solution to 125.0 ml
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3 if the surface concentration is maintain..
Using the formula W = mg, how many milliliters of water with a density of 1g/mL are required to weigh 0.75 newtons and g = 9.81 m/s2?
Calculate the energy change for the reaction K(g) + I(g) → K+(g) + I- (g) given the following ionization energy (IE) and electron affinity (EA) values. IE K = 419 kJ/mol, IE I = 1010 kJ/mol; EA K = 48 kJ/mol. EA I= 295 kJ/mol
Hydrofluric acid in an aq solution has a molar mass of 20.01g/mol. A chemist dissovles a .2001g sample in 20.0 mL and titrates it
An acetic acid/acetate buffer system would be the best choice for experiments at pH = 5.00. What mass of sodium acetate trihydrate (NaCH3CO2•3H2O)
when a blue copper(II)nitrate solution is mixed with a colorless solution of sodium sulfide
calculate the chloride concentration in mEq/L of a solution prepared by diluting 25 g of BaCl2 to 2 L. (WM = 208)
Explain why the atomic mass of an atom is a decimal number and how that value was determined before being placed on the periodic table.
The heat of vaporization of water in this temperature range is 2.40 kJ/g. The heat capacity of water is 4.184 J/g.K. Answer in grams of water
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