All categories

3 years ago

At elevated temperatures in an automobile engine, N2 and O2 can react to yield NO, an important cause of air pollution.

Chemistry

1 answer:

Ivan3 years ago

7 0

(a) <u>7.32 moles of N₂</u>

(b) = 5.72 moles of NO

Explanation:

We begin by balancing the chemical reaction involved;

N₂ + 0₂ → 2NO

The number in front of the elements or compounds indicate the mole ration involved in the reaction. One (1) mole of N2 and one (1) mole of O2 react to form two (2) moles of NO.

(a) Because the mole ratio between O₂ and N₂ is 1 : 1 then <u>7.32 moles of N₂</u> are needed to react with 7.32 mol of O₂

(b) Because the ration of N₂ and NO in the chemical equation is 1 : 2, then (2.86 * 2) moles of NO can be formed when 2.86 mol of N₂ reacts.

= 5.72 moles of NO

(c) (b) Because the ration of O₂ and NO in the chemical equation is 1 : 2, then (0.230 * 2) moles of O₂ must react to produce 0.230 mol of NO.

= 0.460 moles of O₂

You might be interested in

Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide: 4Al (s) + 3O2 (g) â†’ 2Al2O3 (s) In

jek_recluse [69]

Answer: The percent yield of the reaction is 74 %

Explanation:

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

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

$\text{Moles of aluminium}=\frac{2.5g}{27g/mol}=0.092mol$

For oxygen gas:

$\text{Moles of oxygen gas}=\frac{2.5g}{32g/mol}=0.078mol$

The chemical equation for the reaction of titanium and chlorine gas follows:

$4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)$

By Stoichiometry of the reaction:

4 moles of aluminium reacts with 3 moles of oxygen.

So, 0.092 moles of aluminium reacts with = $\frac{3}{4}\times 0.092=0.069mol$ of oxygen

As, given amount of oxygen is more than the required amount. So, it is considered as an excess reagent.

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

By Stoichiometry of the reaction:

4 moles of aluminium produce = 2 moles of $Al_2O_3$

So, 0.092 moles of aluminium will produce = $\frac{2}{4}\times 0.092=0.046moles$ of $Al_2O_3$

Now, calculating the mass of aluminium oxide:

$\text{Mass of aluminium oxide}=moles\times {\text {molar mas}}=0.046mol\times 102g/mol=4.7g$

To calculate the percentage yield of titanium (IV) chloride, we use the equation:

$\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100$

Experimental yield = 3.5 g

Theoretical yield = 4.7 g

Putting values in above equation, we get:

$\%\text{ yield of reaction}=\frac{3.5g}{4.7g}\times 100\\\\\% \text{yield of reaction}=74\%$

Hence, the percent yield of the reaction is 74 %

6 0

3 years ago

Match the bond to its formula

Anvisha [2.4K]

1. ionic NaCl

2. covalent CO2

3.metallic ZnCu

6 0

3 years ago

A sample of He gas in a 2 L container has a pressure of 6 atm. The He is moved into a 3 L container of Ne gas at 8 atm. What is

jenyasd209 [6]

Answer:

yhcdun vfggcbnjj. bhh hjb jnnn k inv

8 0

3 years ago

If it takes 100 N to move a box 5 meters, what is the work done on the box?

JulijaS [17]

<h3>Answer:</h3>

500 Joules

<h3>Explanation:</h3>

<u>We are given;</u>

Force is 100 N
Distance is 5 m

We are required to calculate the work done;

Work done is the product of force and distance.
That is, work done = Force × distance
Work is measured in Joules

Thus, in this case;

Work done = 100 N × 5 m

= 500 Joules

Thus, the work done in moving the box is 500 joules

8 0

4 years ago

EXPERIMENT 1: How do you expect your coarse titration volume at the color change to compare to your fine titration volumes?

olchik [2.2K]

In the endpoint when the indicator changes color it gives the information that the acid is neutralized by the base.

<h3>What is Titration ? </h3>

Titration is also known as titrimetry is a technique where a solution of known concentration is used to calculate the concentration of the unknown solution. Titration is a laboratory technique.

<h3 /><h3>What is Endpoint ? </h3>

The point at which the indicator changes the color is known as Endpoint.

Thus from the above conclusion we can say that In the endpoint when the indicator changes color it gives the information that the acid is neutralized by the base.

Learn more about the Titration here: brainly.com/question/186765

#SPJ1

6 0

2 years ago