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A solution contains 0.400 mol of calcium nitrate as well as 6.500 mol of water. Compute the vapor pressure of the solution at 55 degrees Celsius. The vapor pressure of pure water at 55 degrees Celsius is 118.1torr. Presume that the solute completely dissociates.
1. given this ksp for leadii chloride find the molar solubility of this salt in a 0.05m of cacl2 solution.2. will caoh2
Calculate the molarity of a solution made by dissolving 0.750 grams of Na2SO4 in enough water to form exactly 850mL of solution. How many moles of KMnO4 are present in 250mL of a 0.0475 M solution
a volume of 18.0 m l contains a mixture of 0.250 mole n2 0.250 mole o2 and an unknown quantity of he. the temperature
An unknown mass of each of the given substances 1.Sand (tf=70.4 C),2.Pyrex glass(tf=67.6 C),3.water(tf=55.9 C) ,4.ethanol (tf=45.9 C), initially at 19.0 degrees Celsius, absorbs 1930 Joules of heat. Find out the mass of each substance.
We add R12 to the tank until the final mass of R12 inside the tank is 80 kg. If the temperature remains constant, what is the volume occupied by the liquid in the final state. How much mass of R12 was added to the tank
Formula Molar Mass (g/mol) ?G°f (kJ/mol) ?H°f (kJ/mol) S° (J/(K mol)) I2(g) 253.812 19.33 62.44 260.69 I2(s) 253.812 0 0 116.14 T = (NA) K R = 8.314 J/(K mol) Calculate the temperature (K) at which the equation as written is at equilibrium.
Gas A2 reacts with gas B2 to form gas AB at a constant temperature. The bond energy of AB is much greater than that of either reactant. What can be said about the sign of ΔH, ΔSsurr, and ΔS. Explain how potential energy changes for the process.
bone was dissolved in hydrochloric acid giving 45.0 ml of solution containing calcium chloride cacl2. to precipitate
Calculate the mass of the sample of silver. Can you please explain how you answered this question so I can understand it on my final?
Europium crystallizes in a body-centered cubic lattice (the Eu atoms occupy only the lattice points).The density of Eu is 5.26 g/cm3. Calculate the unit cell edge length in pm.
A saturated solution of this substance was made in 0.01 M KlO3. The copper concentration was found to be 0.0012M. Determine the [IO3^-] and the Ksp of the substance.
If a student utilized a sample of metal that was wet an important percentage of the apparent mass of the metal would be water. Would the ensuing measured value of the heat capacity be too high or too low. Explain.
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