M4 Periodic
Table: Chemical Equations
Slide 24 of 30
Practice Questions:
Multiple Choice
1. N04/1/9 When propane is
burned, carbon dioxide and water are formed, as shown.
C3H8 + 5O2 ® r CO2 + s H2O
Which values of r and s balance the equation?
2. For
each atom of carbon present in a molecule, there is an equal
number of atoms of oxygen but twice as many atoms of
hydrogen. What is the formula of the molecule?
A. C2H2O2 B.
C2H2O4 C. C2H4O2 D.
C2H6O