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The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. But given the same kinetic energies, a lighter molecule will move faster than a heavier molecule.
where R=8.314 J/(mol·K) and ? is molar mass in kilograms per mole. Note that a joule is the same as a kg·m2/s2.
1. What is the rms speed of F2 molecules at 475 K?
2. What is the rms speed of He atoms at 475 K?
Calculate the molarity of a solution prepared by dissolving 78.6 g of KF in enough water to produce 225 mL of solution.
A gas occupies 672 mL at 785 mmHg. What volume would it occupy at 453 mmHg at constant temp??
Liquid nitrogen has a density of 0.807 g/mL at -195.8 °C. If 1.00 L of N2(l) is allowed to warm to 25°C at a pressure of 1.0 atm, what volume will the gas occupy.
Looking at the nickel complexes as an example, it is found that those formed with ammonia give the complex [Ni(NH3)6]^2+ and when formed with ethylenediamine the complex [Ni(en)3)^2+ is the result.
Explain what a high Ka value of an acid represents and what a low Ka value represents. State and explain the difference between the endpoint and the equivalence point in a titration
what would the balanaced equation be for the production of Triiodide considering the reactants
Calculate the final pressure of a gas if a 953-mL sample of the gas at 1.25 atm and 50.0 degrees Celsius is changed to 1.55 L at 75.0 degrees Celsius.Be sure to include units and correct significant figures
What amount of energy is required to completely ionize 6.2 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole?
Proceeds at a certain temperature until the partial pressure of H2O, H2, and O2 reach 0.0500 atm, 0.00200 atm, and 0.00800 atm respectively. What is the value of the equilibrium constant at this teperature?
Which of the following is an INCORRECT description of benzene? Which of the following criteria is NOT used to determine if a molecule is aromatic?
If 348 grams of K2SO4 (molar mass 174 grams) is dissolved in enough water to make 500 milliliters of solution, what are the concentrations of the potassium and sulfate ions.
suppose you have a solution that might contain any or all of the following cations: Cu2+, Ag+, Ba2+, and Mn2+. the addition of HBr causes a precipitate to form
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