Use the equation for density :
Density = mass / volume
Density = 120 / 480
Density = 0.25
Answer:
I think that it it correctly balanced that is my opinion and, because the way it is set up, that the answer will tell you weather or not it is correctly balanced or not.
The answer is 9. Calcium nitrate is made up
of 3 different elements that equal 9 atoms.
It went under a physical change because it (1) changed color. (2) changed form.
