Which substance is a common reducing agent used in the production ...

[kshipps]

Which substance is a common reducing agent used in the production of metals from ores?
 
  A) C
  B) Na2Cr2O7
  C) H2O
  D) LiBr

Question 2

In the reaction N2 + 3 H2  2 NH3, nitrogen is
 
  A) a product.
  B) a reducing agent.
  C) an oxidizing agent.
  D) a catalyst.

Question 3

Which of the following is NOT a potential problem with a sanitary landfill?
 
  A) A landfill may leak and contaminate groundwater.
  B) Materials in a landfill decompose more slowly than materials that are exposed to environmental conditions.
  C) The landfill will eventually fill up.
  D) All of the above are potential problems of landfills.

[nanny]

Answer to Question 1

A

Answer to Question 2

C

Answer to Question 3

D

[kshipps]

Wow, this really help

[amandalm]

Gracias!