Answer:
starts form from a accumulation of gas and dust ,which collapses due to gravity and starts to form stars
The Balanced chemical equation for above reaction will be :
The Coefficients will be :
So, Correct option is :
A. 3, 1, 1, 3
_____________________________
Answer is the mass of the atom. Protons + neutrons= mass
Let's say you have oxygen with a mass of 16.
Oxygen has 8 protons
To find neutrons subtract 16-8= 8
So it would also be 8 neutrons.
Example of how to find mass if you know protons + neutrons:
Sodium has 11 protons and 12 neutrons. Add the protons and neutrons
11 + 12= 23
Mass is 23
