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Calculate the vapor pressure of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6, at 20°C. Assume the solution is ideal. The vapor pressure of pure benzene is 74.6 torr at 20°C.
62.5 torr
14.5 torr
40.8 torr
60.1 torr
12.1 torr
State the compositions and relative proportions of the two phases present after a solution initially at thjis mole fraction (0.300) is heated to 394.94.
Using a solution prepared by adding 467 mL of 0.400 M silver nitrate with 421 mL of 0.503 M sodium phosphate then determines what is the silver ion concentration in? Ksp of silver phosphate = 2.8 × 10-18
Finding Kc from Products' Moles, Volume and Percent Reacted, The following reaction occurs at 1600 deg. C. Calculate the equilibrium constant Kc for the reaction.
What is the [OH-] in a solution that has a [H3O+] = 1 x 10-6 M?
NH4CO2NH2(s)->2NH3(g) +CO2(g) (at equilibrium) starting with only the solid it is found at 40C the total gas pressure is 0.363 atm calculate equilibrium constant Kp
Given a balanced chemical equation and enthalpy of reaction, relate energy change to amount of reactant or product
If vitamin A is 83.86% Carbon and 10.56% Hydrogen by mass then determine the the molecular formula this vitamin A.?
The human body obtains 1078 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized?
Which of the following reactions notate the formation reaction of CO(g)? 1. C(s) + 1/2 O2(g) ? CO(g) 2. CO(g) ? C(s) + 1/2 O2(g) 3. 2C(s) + O2(g) ? 2 CO(g)
alcohol dehydrogenase. Assume all of the ethanol gets converted to acetaldehyde.a) What will the final concentration of NADH be in the solution?
What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 308 torr at 25 oC? (At 25 oC the vapour pressure of pure pentane is 511 torr and that of hexane is 150 torr.)
why differential pulse polarography is the most sensitive technique among the different modern types of polarography
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