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Calculate the average translational kinetic energy (sometimes just called average kinetic energy)
for one mole of gas at 315 K.
for a single gas molecule at 315 K.
Describe a simple and practical way to make 1.00 L of this buffer solution, assuming a 1.0 M solution of the molecular base is available and that the chloride salt of the conjugate acid is available as a solid
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is 1.8*10^{-5}.
If we react 116 molecules of TiCl4 with water according to the equation TiCl4 + 2 H2O -> TiO2 + 4 HCl how many molecules of HCl will we form?
100g of water (specific heat=4.184 J/g*C) and 100g of a metal sample (specific heat=0.397 J/g*C) are heated from 25 degrees celcius to 75 degrees celcius. Which substance required more thermal energy to reach 75 degrees celcius?
The specific heat capacity of a certain monatomic solid is 0.392J*k^-1*g^-1. The chloride of this element (XCl2) is 52% chlorine by mass.
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
a solution of cyclohexane and an unknown solute freezes at 3.3c and 1atm of pressure. calculate the freezing point depresson of the solution
A bicycle tire is filled with air to a pressure of 81.0 psi at a temperature of 19°C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58°C. The volume of the tire increases by 2.0%. What is the new pressure in the ..
What is the pH of a buffer solution that is 0.15 M chloroacetic acid and 0.10 M sodium chloroacetate? Ka = 1.3x10^-3.
For the next three problems, consider 1.0 L of a solution which is 0.3 M HC2H3O2 and 0.2 M NaC2H3O2 (Ka for HC2H3O2 = 1.8 x 10-5). Assume 2 significant figures in all of the given concentrations so that you should calculate all of the following pH..
The air in the balloon is then heated to 62 degree celsius, causing the balloon to expand to a volume of 4.20x10^3 m^3. What is the ratio of the number of moles of air.
What is the rate constant of a first-order reaction that takes 9.00 minutes for the reactant concentration to drop to half of its initial value?
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