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boyakko [2]
2 years ago
15

Use the equation to answer the question

Chemistry
2 answers:
ki77a [65]2 years ago
7 0

If you change the 2 in front of 2O, to a 3, the result of the right side of the equation is 3CO_2+6H_2O

Given the chemical equation expressed as:

CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O

From the equation, we can see that 1 mole of methane reacts with 2 moles of oxygen to form 1 mole of carbon dioxide and 2 moles of water.

If the <u>number of moles of oxygen</u> is replaced with 3 moles, the correct equation will be expressed as:

3CH_4 + 2(3O_2)  \rightarrow3CO2 + 6H2O

This shows that if you change the 2 in front of 2O, to a 3, the result of the right side of the equation is 3CO_2+6H_2O

Learn more here: brainly.com/question/11904811

vaieri [72.5K]2 years ago
6 0

CH4 + 2O2→CO2 + 2H2O

Explanation:

CH4 + O2→CO2 + H2O

First look at the C atoms. At first glance they are balanced with 1 C on each side.

Now look at the H atoms. They are not balanced. There are 4 H atoms on the left side and 2 H atoms on the right. Place a coefficient of 2 in front of the H2O. We now have 4 H atoms on both sides.

CH4 + O2→CO2 + 2H2O

Now look at the O atoms. They are not balanced. There are 2 O atoms on the left side and 4 on the right. Place a coefficient of 2 in front of the O2. We now have 4 O atoms on both sides.

CH4 + 2O2→CO2 + 2H2O

The equation is now balanced. Each side has 1 C atom, 4 H atoms, and 4 O atoms.

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Which one of the following represents a decrease in entropy?
Leni [432]

Answer:

D

Explanation:

There are principally three states of matter. These are the solid, liquid and gaseous states. The gaseous state has the highest degree of disorderliness as gas particles can move randomly while the solid state has the highest level of compactness.

Hence, we need to be adequately fed with information as regards the phase change to know if entropy has decreased or increased.

A. is wrong

Evaporation is a change of state to the gaseous state meaning there is an increased entropy.

B. is wrong

Sublimation is a change of state which means a solid substance like iodine or naphthalene changes its state directly to the gaseous state. There is an increased entropy here too.

C is wrong

Melting of ice means going from ice block to liquid water. This is synonymous to going from the solid state to the liquid state which is an increased entropy

D is correct

Condensation involves going from the gaseous state to the liquid state. This means going from a less ordered state to a more ordered state. This is accompanied by an entropy decrease.

E is wrong

While there are some processes that increase entropy, we also have some process that decrease entropy.

7 0
3 years ago
What is the speed of a car that has traveled 100 miles in 20 hours?<br> |
77julia77 [94]

Answer:

5 mph

Explanation:

100 miles, 20 hours (divide by 2)

50 miles,    10 hours (divide by 2)

25 miles,    5 hours (divide by 2)

divide both sides by 5

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3 0
3 years ago
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Develop the relationship between reducible and irreducible representation of C2v point group taking H2O as example and 3N cartes
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Answer:

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Explanation:

bdhdhdfhshdudhdhd7x6x8xjdjdjdjdjdid8dijdjdjdhdhdj

3 0
2 years ago
How many molecules are in 34.7 grams of water?
Anika [276]

Answer:

This part require data such as Avogadro's number and the molar mass of water. But first, let's find the mass of water in the specified volume by making use of the density formula:

Density = mass/volume

1 g/mL = Mass/70 mL

Mass = 70 g

Each water contains 18 grams per mole, and each mole contains 6.022×10²³ molecules of water. Thus,

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Explanation:

8 0
2 years ago
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Komok [63]

Answer:

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Explanation:

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3 0
3 years ago
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