Sodium Nitrate is written as NaNO(sub3) that is what is throwing you off in this equation.
Take the subscript of 2 off of the sodium in the products and give Sodium Nitrate a coefficient of 2 to balance the equation.
On the periodic table, the size of an element's ionic radius follows a predictable trend. The ionic radius increases as you shift down a column or community. This is because every row introduces a new shell of electrons. The ionic radius decreases over a row or time, going from left to right.
Mechanical and gravitational potential energy
Mass = 10.8 g
volume = 0.56 cm³
Density = mass / volume
D = 10.8 / 0.56
D = 19.29 g/cm³
Is Gold . ( Density of gold )
hope this helps!