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Benzene is a trace component of gasloine. What is the mole ratio of benzene to n-octant in the vapor above a solution of 40.0% benzene and 60.0% n-octane by the mass at 25C? The vapor pressures of n-octant and benzene at 25 C are 11 torr and 95 torr, respectively.
The extrapolated literature value of KEQ for the formation of FeNCS^2+ at 25 degrees C and zero ionic strength is 1047. Predict the equilibrium concentration
Study of a first-order reaction, In the study of a first-order reaction, A--->B, it is found that A/Ao=0.125 after one hour. The system initially consisted of 0.20 mole of a gaseous A at 25 degrees C and 1 atm
Calculate the fraction of atom sites that are vacant for silver at 695°C. Assume an energy for vacancy formation
A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth)
An equilibrium mixture for the reaction above contains [H2] = 1.00 M, [N2] = 1.50 M, and [NH3] = 2.00 M. What is the value of the equilibrium constant, Kc, for the reaction?
the volume of a sample of oxygen gas collected over water is 258 mL at 27 degrees C and 620.0 torr. Calculate the volume in milliliters of dry oxygen gas at STP. (the vapor pressure of water at 27 degrees C is 26.7 torr.)
A Cu/Cu2+ concentration cell has a voltage of 0.24 V at 25 Celcius. The concentration of Cu2+ in one of the half cells is 1.5 * 10-3 M. what is the concentration of Cu2+ in the other half cell?
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
3.8 g of a hydrocarbon fuel is burned in a calorimeter that contains 234 grams of water initially at 25.00 ?C. After the combustion,the temperature is 26.55 ?C.
It is important to know if a particular molecule is composed of elements with different electronegativities as well as the structure of the particular molecule to explain the physical properties of the molecule.
What volume would be occupied by 100 g of oxygen at a pressure of 1.50 atm and a temperature of 25ºC?
Explain what it means that the atomic mass of naturally occurring Ag, is a mixture of its two isotopes forms, is 107.868 u.
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