pp0421220

There is a formula to compute interest charges. The formula is FC = P * R * T. In this formula, R is an abbreviation for what?

rate

ratio

reward

reserve

1. Some of the nerve endings in the skin are sensitive to changes in temperature:

a. Regulating temperate is an example of what?

b. What type of feedback system is this?

C. The nerve ending is what component of the feedback system?

d. Diagram this system (or another similar system of your choice).

For the reaction : 4HBr(g) + O2(g) -> 2H2O(g) + 2Br(g)

1) HBr (g) + O2 (g) -> HOOBr (g)

2) HOOBr(g) + HBr(g) -> 2HOBr(g)

3) HOBr(g) + HBr(g) -> H2O (g) + Br2(g)

a) Write a rate law for each elementary step of themechanism.

b) Identify all intermediates

c) The observed rate =k[HBr][O2] which is the rate determiningstep?

Help me :)

Step 1: CH₃CH₂Br + AlBr₃ <----> AlBr₄^- + CH₃CH₂⁺

Step 2: CH₃CH₂⁺ + C₆H₆ <----> C₆H₆CH₂CH₃⁺

Step 3: AlBr₄^- + C₆H₆CH₂CH₃⁺ <----> AlBr₃ + HBr + C₆H₅CH₂CH₃

Which compound is an intermediate?

a. CH₃CH₂Br

b. AlBr₃

c. C₆H₅CH₂CH₃

d. CH₃CH₂⁺

e. HBr

Which compound is a catalyst?

a. CH₃CH₂Br

b. AlBr₃

c. C₆H₅CH₂CH₃

d. CH₃CH₂⁺

e. HBr

Which compund is a reactant?

a. CH₃CH₂Br

b. AlBr₃

c. C₆H₅CH₂CH₃

d. CH₃CH₂⁺

e. HBr

C4+HBr

HBr

C-C-C=C --------> ?