Complete the combustion equation

Exercise and reference answers

Missing parts

1. Answer

   x + y/4

   Choices

   1. x + y/4
   2. x + y/2
   3. 2x + y

2. Answer

   x

   Choices

   1. x
   2. 2x
   3. x/2

3. Answer

   y/2

   Choices

   1. y/2
   2. y
   3. y/4

Complete the statement

Burning CxHy needs {0} moles of oxygen, producing {1} moles of carbon dioxide and {2} moles of water.

Instructions

Tap the right expression into each blank.