What are the coefficients in front of NO3-(aq) and Cu(s) when the ...

[awywial]

What are the coefficients in front of NO3-(aq) and Cu(s) when the following redox equation is balanced in an acidic solution: ____ NO3-(aq) + ____ Cu(s)  ____ NO(g) + ____ Cu2+(aq)?
 
  A) 2, 3
  B) 2, 6
  C) 3, 4
  D) 3, 6

Question 2

What is the oxidation number change for the bromine atom in the following unbalanced reduction half reaction: BrO3-(aq) + H+(aq)  Br-(aq) + H2O(l)?
 
  A) -7
  B) -6
  C) +6
  D) +7

Question 3

When there is an increase in temperature it can affect an enzyme-catalyzed reaction by
 
  A) increasing the reaction rate
  B) decreasing the reaction rate
  C) both increasing and decreasing the reaction rate
  D) causing a different substrate to be used

[Jmfn03]

Answer to Question 1

A

Answer to Question 2

B

Answer to Question 3

C