What is the molar mass of protein having osmotic pressure
A solution containing 29.85 mg of an unknown protein per 25.5 mL solution was found to have an osmotic pressure of 3.85 torr at 21C. What is the molar mass of protein?
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To isolate caffeine from tea, Dora forgot to evaporate methylene chloride (15 ml) before adding the acetone and petroleum ether to crystallize the final product from material containing traces of chlorophyll. No caffeine crystallized. What should
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What is the MOLAR heat of combustion of benzene, C6H6, if the combustion of 1.00g of BENZENE CAUSES THE TEMPERATURE RISE OF 5.18 deg C in a bomb calorimter that has a heat capacity of 8.07 kj/deg C? (molar mass c6h6 = 78.1)
Teflon is produced from the polymerization of tetrafluoroethene. Write the structure of Teflon showing the monomeric unit in parenthesis.
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Calculate the mass of lead ions per liter in this solution (assume the density of the water solution is 1.0 g/mL). What is the lead concentration in ppb?
If the thickness of the aluminum foil is uniformly 13 um, what area of aluminum foil (in cm^2) can be made? The density of aluminum metal is 2.969 g/cm^3.
Consider a 13.0% solution of sulfuric acid, H2SO4, whose density is 1.090 g/mL. Calculate the molarity of the solution.
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