Consider the irreversible reaction A + 2 B → 3 C .
Which of the following correctly expresses
the rate of change of [B] ?
1.
∆[B]
∆t
= −2 (rate of rxn)
2.
∆[B]
∆t
= −
1
2
(rate of rxn)
3.
∆[B]
∆t
= −(rate of rxn)
4.
∆[B]
∆t
= +
1
2
(rate of rxn)
5.
∆[B]
∆t
= +(rate of rxn)
6.
∆[B]
∆t
= +2 (rate of rxn)

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

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.