NH4OH(aq) → H2O(l) + NH3(g)

What coefficients will balance the equation?

1, 2, 2
3, 3, 4
2, 1, 2
1, 1, 1

is it 212

so whats the answer

BOBSLAYER Here I appreciate bob actually giving us the answer here, keep up the good work for the easy point......

The answer is C

Thank you i got it right

To balance the given chemical equation NH4OH(aq) → H2O(l) + NH3(g), we need to make sure that the number of each type of atom is the same on both sides of the equation.

Let's start by counting the number of each type of atom on each side:

On the left side (reactant side):
N: 1
H: 4
O: 1

On the right side (product side):
H: 2 (from H2O)
N: 1 (from NH3)
O: 1 (from H2O)

Based on the counts, we can see that the number of nitrogen (N) and oxygen (O) atoms are already balanced as they are the same on both sides. However, the number of hydrogen (H) atoms needs to be balanced.

Currently, there are 4 hydrogen (H) atoms on the left side and only 2 hydrogen (H) atoms on the right side. To balance the hydrogen (H) atoms, we can add a coefficient of 2 in front of H2O to have 4 hydrogen (H) atoms on the right side:

NH4OH(aq) → 2H2O(l) + NH3(g)

Now, let's recheck the counts:

On the left side (reactant side):
N: 1
H: 4
O: 1

On the right side (product side):
H: 4 (from H2O)
N: 1 (from NH3)
O: 1 (from H2O)

Now, all the atoms are balanced, and the coefficients for the balanced equation are: 1, 2, 2

NH4OH(aq) → H2O(l) + NH3(g) is balanced as is.

You're making a big deal out of balancing. You count the atoms on one side and make the number balance with those on the other side. If the number is the same it is balanced. If they are not the same the equation is not balanced. Let's look at your numbers. Here they are.
2NH4OH(aq) → H2O(l) + 2NH3(g)
2N on left. 2N on right. OK.
10 H on left (5H in NH4OH x 2 = 10) and 8 H on right(2 H from H2O and 6H from 2NH3). So H is not balanced. You KNOW, without any doubt that 2,1.2 coefficients are not right. Basically, you NEVER are unsure about an equation being balanced. You KNOW it is right or you KNOW is is not right. Just count the atoms on both sides and you KNOW.