Question

balancing equations
type coefficients to balance the equation.
you can also
copy & paste these!
ai + o2 → ai2o3
build a graphical version of the balanced equation.
(view the example on slide #17)

Explanation:

Step1: Balance oxygen atoms

Let the coefficients of \(Al\), \(O_2\), and \(Al_2O_3\) be \(a\), \(b\), and \(c\) respectively. The chemical equation is \(aAl + bO_2
ightarrow cAl_2O_3\).
For oxygen atoms: \(2b = 3c\). Let \(c = 2\), then \(2b=3\times2\), so \(b = 3\).

Step2: Balance aluminium atoms

For aluminium atoms: \(a=2c\). Since \(c = 2\), then \(a = 4\).

Answer:

\(4Al+3O_2
ightarrow2Al_2O_3\)