a certain first order reaction has a rate constant of 2.30 x 10^-2s^-1 at 18 celsius what is the value of k at 65 celsius if ea = 86.5 kj/mol

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?