Question

Help me please I need to bring up grade

Answer 1

This is really simple. Assuming all these reactions are stoichiometric, the ratios of moles if always given by:

`\frac{n {}^{} }{x} = (n)/(y)`

The first n represents the number of moles of the first reactant.

The x represents the coefficient of the first reactant in the equation.

The second n represents the number of moles of the second reactant.

The y represents the coefficient of the second reactant.

For example, let's use the first equation:

`\frac{n \: n {}^(2) }{1} = \frac{n \: h {}^(2) }{3}`

Using cross multiplication;

`3n \: n {}^(2) = 1n \: h {}^(2)`

For each H² mole, we need 3 N² moles

Ratio of N² to H² is 3:1

Hope this given you an idea of how to continue the rest.

If you get stuck you can always comment so i can help you.

Make sure to tell me what you get as your answers so you get a good grade :)