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Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the reaction:
PCl5(g) ?PCl3(g) + Cl2(g)
At 250°C, 0.250 M PCl5 is added to a flask. If Kc = 1.80, what are the equilibrium concentrations of each gas?
Calculate the Gibbs free energy (in kJ/mol) at 80 degrees celsius. Assuming that the change in enthalpy is negligible over this temperature range
What is the formal charge of the N atom in the correct or best Lewis structure for CN-?
At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) ->2 NO(g) + O2(g) The equilibrium constant KP is 158. Analysis shows that the partial pressure of O2 is 0.44 atm at equilibrium. Calculate the pressure of NO and NO2 in the mixture.
A 325-mL sample of solution contains 25.3 g of CaCl2, which is fully dissolved. (a) Calculate the molar concentration of Cl- in this solution. (b) How many grams of Cl- are in 0.100 L of this solution?
Consider the compression of the gas in the right part to be a reversible process. a) calculate the work done on the right part in this process and the final temperature in the right part
Mass spectroscopy indicates the molar mass to be about 162 g/mol. What is the molecular formula of the unknown compound?
given this equation 2C4H10+13O2 yield 8CO2+10H2O how many moles of carbon dioxide is porduced from 3.85 moles of butane?
Crystalline solids are well-ordered arrays of atoms or molecules. Crystalline solids may be metallic solids, molecular solids, or ionic solids.
Calculate the number of molecules inside the cell, which is 3.6um long and 1.2 um in diameter.
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M, what are the concentrations of NO, N2, and O2 when the reaction mixture reach..
A gas sample containing 1.65 mol at 25°C exerts a pressure of 413 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
How much energy (in calories) is needed to heat 17cm^3 of fat from room temperature (25 C) to its melting point (35 C)?
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