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Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose (molar mass = 180.2 g/mol, a non-electrolyte) in 920.0 mL of water at 25 °C. The vapor pressure of pure water at 25 °C is 23.76 mm Hg. Assume the density of water is 1.00 g/mL.
a if the electron in a hydrogen atom undergoes a transition from an n 6 level to an n 4 level what is the wavelength
What is the percent mass concentration of NaCl in a solution that is prepared by adding 15.0 g of NaCl to 90.00 g water? What happens to each of the following properties of a solution when the concentration of solute is decreased?
Which compounds are completely water soluble. Which compounds are insoluble in water.
Write a molecular equation for the precipitation reaction (if any) that occurs when the following solutions are mixed. If no reaction occurs, write noreaction. Lithium sulfate and strontium chloride
Consider the two containers below, labeled C and D, one with an ideal gas atom and one with ideal gas molecules, each at the same temperature. The gas molecule has more mass than the gas atom. one container has one molecule
What is the formula mass for diboron tetrachloride? What is the formula mass of copper (II) fluoride? Write a formula for the compound that forms between barium and each polyatomic ion.
Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both.
hot methanol and then stored the recrystallization solution until the next lab period. What possible effect on your results due to this experimental error could take place?
Explain what are the names, mass number, number of proton, number of neutrons, number of electron, atomic number, atomic weight and symbols of all the elements
When limestone (calcium carbonate) is heated it decomposes to form lime (calcium oxide) and carbon dioxide. A. write a balanced chemical equation for this reaction
How many kg of carbon dioxide (CO2) are formed per kg of CaCO3 reacted? Presume that there is an excess of HNO3 available.
calculate the energy levels of the pi-network in octatetaene c8h10 using the particle in the box model. to calculate
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