Molecular weight of the unknown
A 5.50 g sample of an unknown is dissolved in 251. g of benzene. The freezing point of the solution is 1.02 C below the normal freezing point of pure benzene. What is the molecular weight of the unknown? (Note:] Kf for benzene = 5.21 C/m)
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You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24°C. Calculate the percent by mass of sugar in the original mixture.
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A 5.50 g sample of an unknown is dissolved in 251. g of benzene. The freezing point of the solution is 1.02 C below the normal freezing point of pure benzene. What is the molecular weight of the unknown?
3-di-t-butylcyclohexane exists in two forms that are known as the "chair" and "boat" conformations. at 580K, 6.42% of the molecules are in the chair form. calculate the value of the equilibrium constant for the reaction at equilibrium.
A 105 g piece of metal is heated to 288 degrees C and dropped into 85.0g water at 26 degrees C. If the final temperature of the water and metal is 58 degrees C, what is the specific heat of the metal (J/g C)?
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You run a 50ft extension cord to a load. The resistance of each conductor in the cord is 0.05Ω /foot. If the load were directly connected to the source voltage of 120V it would draw 10A. What is the load voltage when you use the exten
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