Question

1. Explain primary equation.
2. Explain formula unit with an example.
3. Why should we balance a chemical equation?
4. Write a chemical equation for reaction of iron ox
Balance the equation
MULTIPLE CH​

Answer 1

Explanation:

1.primary equation are low level equation.

2.whose formula unit..whose example..

3.we should balance equation because .....

4. i don't know

Answer 2

chemical equation which has only molecular formulae of the substance and as not got balanced is called primary equation 1

formula unit is one unit of atom or ion or molecule corresponding to give a formula 2

ex: nacl formula unit - one na+ ion and one cl ion

b) mgbr2 formula unit - one mg+2 ion and two br- ions

c) one formula unit of water is one h2o molecule

hydrogen reacting with oxygen to from water 3