Question 11

Step 1: 2NO2 -> N2 + 202
Step 2: 200 + O2 -> 2002
Step 3: N2 + O2 -> 2NO

The above reaction
represents a proposed mechanism for the reaction of NO2 with CO. What are the overall product(s) of the reaction?

1) NO and CO2
2) O2 and CO2
3) Nz and NO
4) NO only

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases