Question

1. a chemical formula is shown below:

$(nh_4)_3po_4$
how many atoms, in total, are in this chemical formula?
enter the correct answer in the box.
there are $square$ total atoms.

Explanation:

Step1: Count atoms in $\text{NH}_4$

Each $\text{NH}_4$ has $1+4=5$ atoms. Multiply by 3:
$3 \times 5 = 15$

Step2: Count atoms in $\text{PO}_4$

$\text{PO}_4$ has $1+4=5$ atoms.

Step3: Sum all atoms

Add the two totals:
$15 + 5 = 20$

Answer:

20