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Benzene's (C6H6, MM= 78.11184 g/mol) vapor pressure at 25.0 degrees C is 95.00 mm Hg. What is Nitroglycerin's molar mass if the addition of 0.454 g of nitroglycerin to 100.0 g of benzene changes the solution's vapor pressure to 94.85 mm Hg?
A cylinder with a moveable piston contains 0.84 mol of gas and has a volume of 328 mL. What will its volume be if an additional 0.27 mol of gas is added to the cylinder? (Assume constant temperature and pressure.)
The density of so-called "heavy water"=1.1053 g/mL at 20 0C. determine what would be the mass of the flask when filled with heavy water?
Compute the value of ΔH ° if the combustion products are CO2 (g) and H2O (g). it isgiven that: CO 2 (g) = ΔHf ° - 393.5 kJmol-1; H 2 O (l) = ΔHf ° -285.8 kJmol-1; H 2 O (g) = ΔHf ° -241.8 kJmol -1.
Calculate the molarity of a solution made by dissolving 12.1 grams of Na2CrO4 in enough water to form exactly 520 mL
The reaction 2A ---> B + C has a Kc of 0.2. The reaction is commenced with initial concentrations [A] = 0.2 M, [B] = 0.2 M and [C] = 0.2 M. In what direction does the reaction occur?
What is the freezing point of a solution of 1.17 g of 1-naphthol, C10H8O, dissolved in 2.00 mL of benzene at 20°C? The density of benzene at 20°C is 0.876 g/mL. Kf for benzene is 5.12°C/m, and benzene's normal freezing point is 5.53°C.
If 75 g of liquid water (C = 4.18 J/g-oC) in a calorimeter changes temperature from 25°C to 75°C, how much heat was transferred? Use the equation C = q/mT.
The rate constant of a reaction is 4.7 10-3 s-1 at 17°C and the activation energy is 33.6 kJ/mol. What is the value of k at 75°C.
ou have the following supplies: 2.00L of 1.00M KH2PO4 stock solution, 1.50L of 1.00M K2HPO4 stock solution, and a carboy of pure distilled H2O . How much 1.00M KH2PO4 will you need to make this solution?
Which of the following compounds is soluble in water ? A) BaSO4
What is the pH of a solution which is 0.021 M in weak base and 0.039 M in the conjugate weak acid (Ka = 7.1 Ã- 10â€"6)? pH=?
How many moles of ammonium ions are released when 1.6 mol of ammonium phosphate, (NH4)3PO4, is dissolved in water?
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