Question

1. completing the assignment: • balance the following chemical equations using the simulation: • h₂ + o₂ → h₂o • n₂ + 3h₂ → 2nh₃ • c₃h₈ + 5o₂ → 3co₂ + 4h₂o • 2al + fe₂o₃ → al₂o₃ + 2fe

Explanation:

Step1: Balance hydrogen and oxygen in $H_2 + O_2

ightarrow H_2O$
We need 2 moles of $H_2$ and 1 mole of $O_2$ to form 2 moles of $H_2O$. So the balanced equation is $2H_2+O_2
ightarrow 2H_2O$.

Step2: Analyze $N_2 + 3H_2

ightarrow 2NH_3$
This equation is already balanced as there are 2 nitrogen atoms and 6 hydrogen atoms on both sides.

Step3: Check $C_3H_8 + 5O_2

ightarrow 3CO_2+4H_2O$
There are 3 carbon atoms, 8 hydrogen atoms and 10 oxygen atoms on both sides, so it is balanced.

Step4: Examine $2Al + Fe_2O_3

ightarrow Al_2O_3+2Fe$
There are 2 aluminum atoms, 2 iron atoms and 3 oxygen atoms on both sides, so it is balanced.

Answer:

$2H_2+O_2
ightarrow 2H_2O$; $N_2 + 3H_2
ightarrow 2NH_3$ (already balanced); $C_3H_8 + 5O_2
ightarrow 3CO_2+4H_2O$ (already balanced); $2Al + Fe_2O_3
ightarrow Al_2O_3+2Fe$ (already balanced)