2n+3h2 gives 2nh3 find out the total number of molecules and atoms

Do you mean

N2 + 3H2 = 2NH3 ?
each group of atoms is a molecule, right?
so, count the atoms, and count the groups
Maybe some parentheses would help distinguish
(N2) + 3(H2) = 2(NH3)

Nil

To find out the total number of molecules and atoms in the reaction 2n + 3H2 -> 2NH3, we need to analyze the coefficients of the reactants and products.

The coefficient of '2n' indicates that there are 2 molecules of 'n' involved in the reaction. However, we don't have any information about the composition or formula of 'n' in this equation. Hence, we cannot determine the number of atoms or molecules in 'n'.

Moving on to '3H2', the coefficient '3' implies that there are 3 molecules of 'H2' involved in the reaction. Each molecule of 'H2' consists of 2 atoms of hydrogen, so we multiply the coefficient '3' by '2' to determine the total number of hydrogen atoms.

3 H2 molecules x 2 hydrogen atoms per molecule = 6 hydrogen atoms

Next, we examine the product '2NH3'. The coefficient '2' indicates that there are 2 molecules of 'NH3' formed as a result of the reaction. Each molecule of 'NH3' contains 3 atoms of hydrogen, so multiplying the coefficient '2' by '3' gives us the total number of hydrogen atoms in the product.

2 NH3 molecules x 3 hydrogen atoms per molecule = 6 hydrogen atoms

So, the total number of hydrogen atoms in the reaction is 6.

Considering nitrogen atoms, each molecule of 'NH3' contains 1 nitrogen atom. Multiplying the coefficient '2' by '1', we get the total number of nitrogen atoms in the product:

2 NH3 molecules x 1 nitrogen atom per molecule = 2 nitrogen atoms

Therefore, the total number of atoms in the reaction is:
6 hydrogen atoms + 2 nitrogen atoms = 8 atoms in total.

With no percentages and no masses given I don't have a clue as to how you determine the number of atoms or molecules. It just can't be done.