Question

Can someone plz help me im running out of time !!!!

Balance the chemical equation below using the smallest possible whole number
stoichiometric coefficients.

Q1= C(s)+H2(g) -> C2H6(g)
Q2= NH3(g)+O2(g)-> HCN(aq)+H2O(l)

Answer 1

To balance the equation C(s) + H2(g) -> CH4(g), a coefficient of 2 is added in front of the formula for hydrogen to ensure the same number of atoms of each element on both sides of the equation.

Step-by-step explanation:

When we count the number of atoms of both elements, shown under the equation, we see that the equation is not balanced. There are only 2 atoms of hydrogen on the reactant side of the equation, while there are 4 atoms of hydrogen on the product side. We can balance the above equation by adding a coefficient of 2 in front of the formula for hydrogen.

C(s) + 2H₂(g) → CH₄(g)

A coefficient is a small whole number placed in front of a formula in an equation in order to balance it. The 2 in front of the H₂ means that there are a total of 2 × 2 = 4 atoms of hydrogen as reactants.

Answer 2

1. C(2)+H2(1) -> C2H6(1)

2. NH3(2)+O2(3)-> HCN(2)+H2O(3)

I am not sure about the second one.