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A molecular compound is dissolved in water at 25 C such that its mole fraction ,X, is 0.225. what is the vapor pressure of the resulting solution if the vapor pressure of pure water is 23.8 torr at 25 C
Calculate the molar solubility of silver carbonate in a solution that already contains 2.2 x 10-3 M silver nitrate, AgNO3. Ksp=8.85 x 10^-12.
Nitartion of ferrocene not possible why, Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions, even though nitration is an electrophilic aromatic substitution reaction. Explain.
For three known solutions and an unknown solution of a compound in water: Which one of the following values is possible as the molarity of the unknown
What mass of ethanol is present in the vapor? (the vapor pressure of ethanol is 10.0 torr at -2.3 degrees C and 40.0 torr at 19 degrees
how can you tell when the hydrolysis of starch is complete? Why does the test work this way? What is the monosaccharide that results at the end?
Calculate the volume (in mL) of He collected at STP when 3.60 g of pure 226Ra is stored in a closed container for 135 years.
A chemical reaction in which the atoms of the reactants undergo a change in the oxidation state is called a redox reaction. Such involve both oxidation (increase in oxidation state) and reduction
Calculate the energy requird to transform this steam into an ice cube at -20 degree C. Also, graph this phase change, with energy as a function of temperature
Determine the mass of Cr 3 + in the original solution if The total mass of the precipitate = 49.6 .
For the following pair of polymers, state whether or not it is possible to determine whether one polymer is more likely to crystallize than the other. 1) linear and syndiotactic polypropylene
Consider the reaction 2ZnS + 3O2 → 2ZnO + 2SO2. Suppose that you wanted enough O2 to completely react with 500. g of ZnS.
Hydrochloric acid reacts with aluminum to form aluminum chloride and gseous hydrogen. What's the mass of aluminum required to produce 1.0kg of aluminum chloride if there is excess acid?
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