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A solution is made from 96 g of a nonvolatile solute in 80 grams of water. The solution has a vapor pressure of .312 atm at 75 degrees C. Calculate the molar mass of the nonvolatile solute. The vapor pressure of pure water at 75 degrees C is .380 atm.
A sample of K2S contains 1.35 g of potassium. How many moles of potassium sulfide are present in the sample
When adjusted for any changes in and with temperature, the standard free energy change at 2400 is equal to . Calculate the equilibrium constant at 2400.
What is the pressure in atmospheres inside a container of gas connected to a mercury-filled open-end manometer when the level in the arm connected to the container is 25.4 cm higher than the level in the arm open to the atmosphere and the atmosphe..
you come across a beaker that contains water, aqueous ammonium acetate, and a precipitate of calcium phosphate. write the balanced equation for a reaction between two solutions containing ions that could produce this solution.
If you want to prepare a 0.5 M solution of ascorbic acid using 25.0 mL water, how many moles of ascorbic acid do you need. How many grams of ascorbic acid is this
An extraction specifies than an aqueous solution which contains dissolved organic material be extracted twice with 10mL of diethyl ether. A student removed the lower layer after the first extraction and adds the second 10 mL portion of ether
A 0.464 g sample of a compound containing the elements carbon, hydrogen, oxygen, and sulphur was burned completely, yielding 0.969 g CO2 and 0.198 g H2O. In a separate experiment, all the sulphur in another 0.464 g sample was converted to 0.859 g ..
Using two different methods, determine delta G degree at 25 degrees for the formation of POCl3 from its constituent elements
A sample of a gas weighs 2.880 g and has a volume of 1010.0 ml at 685.0 torr and 29.0 C. What is its molar mass
sulfur dioxide is an unwelcome result of burning soft coal in power plants. Some of the sulfur dioxide ends up as sulfuric acid ( H2SO4) in acid rain.
Ammonia reacts with hypobromite, OBr-, according to the equation below. Find the molarity of OBr- is 13.35mL of solution reacts with 4.66mg of NH3 (molar mass = 17.03). 2NH3 + 3OBr- ----> N2 + 3Br- + 3H2O
Calculate the de Broglie wavelength of an neutron moving at 1% the speed of light. Calculate the velocity of a neutron with a wavelength of 75pm.
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