A sample of air occupies 3.20 l when the pressure is 1.40 atm. (a) what volume does the sample occupy at 5.80 atm at the same temperature?

What's the hydroxide ion concentration of a solution with a pH of 3.0

What is a measure of the average speed of the particles in a substance?

A cube of ice is added to some hot water in a rigid, insulated container, which is then sealed. There is no heat exchange with the surroundings. What has happened to the total energy and the total entropy when the system reaches equilibrium?

What is the difference between a phase and a phase transition? a. a phase is a region with homogeneous (uniform) properties and a conversion between states is called a "phase transition" c.

18c = __ k A.-255 B. 291 C. 255 D.-291

F the solution described in the introduction is cooled to 0 ∘c, what mass of kno3 should crystallize?

11. You run 100 m in 25 s. If you then run the same distance in less time, does your aver - age speed increase or decrease? Explain.

In a zero order reaction, it takes 342 seconds for 75% of a hypothetical reactant to decompose. Determine the half-life t_{1/2} in units of seconds. Do not enter units with your numerical answer. Numeric Answer:

Choose one of the statements below that would best complete the following sentence. Carbenium ions are made by ... 1. adding protons to olefins. 2. abstracting protons from olefins. 3. adding hydride ions to naphthenes. 4.

Describe one main use for each fuel:coal, oil, and natural gas