Ammonia (nh3) reacts with oxygen to form nitric oxide (no) and water vapor: 4nh3 + 502 4no + 6h2o b) when 20.0 g nh3 and 50.0 g o2 are allowed to react, which is the limiting reagent? which reactant is left over and how much left over at the end of reaction? ans: 2.94 g c) what is the theoretical yield of no if 20.0 g nh3 and 50.0 g o2 are allowed to react? ans: 35.29 g d) what is the theoretical yield of h20 if 20.0 g nh3 and 50.0 g o2 are allowed to react? ans: 31.74 g

a) . Ammonia is the limiting reagent

b. Oxygen is left over and 0.1375 g of oxygen is left over.

c. The theoretical yield of is 35.29 g.

d. The theoretical yield of is 31.74 g.

Explanation:

To calculate the number of moles, we use the equation:

For

Given mass of ammonia = 20.0 g

Molar mass of ammonia = 17.031 g/mol

Putting values in equation 1, we get:

For

Given mass of oxygen gas = 50.0 g

Molar mass of oxygen gas = 32 g/mol

Putting values in equation 1, we get:

The chemical equation for the reaction is

By Stoichiometry of the reaction:

4 moles of ammonia reacts with = 5 moles of oxygen

So 1.17 moles of ammonia will react with = of oxygen

As, given amount of oxygen is more than the required amount. So, it is considered as an excess reagent and (1.6-1.4625)= 0.1375 g of oxygen is left unreacted.

Thus ammonia is considered as a limiting reagent because it limits the formation of product.

1. By Stoichiometry of the reaction:

4 moles of ammonia produces = 4 moles of

1.17 moles of ammonia will produce = of

Mass of

Thus Theoretical yield of is 35.29 grams.

2. By Stoichiometry of the reaction:

4 moles of ammonia produces = 6 moles of

1.2 moles of ammonia will produce = of

Mass of  

Thus Theoretical yield of is 31.74 grams.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds