What is the sum of the coefficients when the following equation ...

[mpobi80]

What is the sum of the coefficients when the following equation is balanced using the lowest, whole numbered coefficients? ___ B2O3(s) + ___ HF(l)  ___ BF3(g) + ___ H2O(l)
 
  A) 8
  B) 11
  C) 15
  D) none of these

Question 2

Which ions are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl2 and AgNO3?
 
  A) Co2+ and NO3-
  B) NO3- and Cl-
  C) Co2+ and Ag+
  D) Cl-
  E) NO3-

Question 3

The electrode at which oxidation occurs is called the ________.
 
  A) oxidizing agent
  B) cathode
  C) reducing agent
  D) anode
  E) voltaic cell

[IRincones]

Answer to Question 1

D

Answer to Question 2

A

Answer to Question 3

D

[mpobi80]

TY

[IRincones]

You're welcome