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If 0.140mol of a nonvolatile nonelectrolyte are dissolved in 3.30mol of water, what is the vapor pressure PH2O of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 °C
To what temperature must the specimen be heated and how much Sn should be mixed to the 1.5-kilograms specimen at the temperature of twenty five degree celsius to achieve this state?
A 325-mL sample of solution contains 25.3 g of CaCl2, which is fully dissolved. Calculate the molar concentration of Cl- in this solution.
which observed color band corresponds to the largest energy difference between levels and which is the smallest?
A gas occupies 12.3 liters at a pressure of 40.0 mmHg. What is the volume when the pressure in increased to 60.0 mmHg
A 0.750 g of lye is dissolved in water and titrated with 32.0 mL of 0.500 M HCl. What is the percent purity of the lye sample
A solution of calcium ions contains 7 meq/250. cm3 of calcium ion. How many moles of calcium ion does this solution contain
Given 100 g of hot tea at 90 C what mass of ice at -10 C must be added in order to obtain a final temperture of 10 C
Find the molarity of the carbonate in the solution. A solution is prepared by dissolving 11.60g of a mixture of sodium carbonate and sodium bicarbonate in 1.00 L of water. A 300.0-cm^3 sample of the solution is then treated with excess HNO3 and boi..
When optically active B was treated with CrO3 in pyridine, an optically inactive sample of A was obtained. Heating A with hydrazine in base gave hydrocarbon C, which, when heated with alkaline KMnO4, gave carboxylic acid D. Identify compounds A, B..
The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law.
Determin whether each of the following equation is balanced or unbalanced: a) PCl3(l)+Cl2(g)--->PCl5(s), b)CO(g)+2H2(g)--->CH3OH(l), c)2KClO3(s)--->2KCl(s)+O2(g), d)Mg(s)+N2(g)--->Mg3N2(s).
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
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