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3 years ago

Draw the following organic molecules like in the example SEE THE PHOTO

Chemistry

1 answer:

Agata [3.3K]3 years ago

6 0

Answer:

Why do you think people start smoking?

Explain and provide a sample situation to support the given words below. (i will mark as the brainliest if who could answer this asap)

1. Parental Role Model

2. Adolescents Experimentation and Rebellion

3. Depression

4. Limited Education

5. Weight Control

6. Aggressive Marketing

7.Stress

8. Addiction

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Describe how knowledge of the numbers of protons and electrons in atoms allow

Svetradugi [14.3K]

the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in. the number of electrons in all shells of an element is represented in the periodic table as the element's atomic number.

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3 years ago

Unlike solids and liquids, gases can be compressed. How is this physical characteristic of gases beneficial to society?

Anna35 [415]

Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form. An internal combustion engine provides a good example of the ease with which gases can be compressed.

6 0

3 years ago

It requires two sticks of butter to make a batch of 20 cookies. How much butter will it take to make 150 cookies?

liq [111]

Answer:

It would take 15 sticks of butter

Explanation:

2 divided by 20 is 0.1

0.1 is how much butter for 1 so now we multiply that by 150

0.1 x 150 = 15

Therefore, you would need 15 sticks of butter for 150 cookies

6 0

3 years ago

Iron (III) oxide and hydrogen react to form iron and water, like this: Fe 03(s)+3H9)2Fe(s)+3HO) At a certain temperature, a chem

belka [17]

The question is incomplete, here is the complete question:

Iron (III) oxide and hydrogen react to form iron and water, like this:

$Fe_2O_3(s)+3H_2(g)\rightarrow 2Fe(s)+3H_2O(g)$

At a certain temperature, a chemist finds that a 8.9 L reaction vessel containing a mixture of iron(III) oxide, hydrogen, Iron, and water at equilibrium has the following composition.

Compound Amount

Fe₂O₃ 3.95 g

H₂ 4.77 g

Fe 4.38 g

H₂O 2.00 g

Calculate the value of the equilibrium constant Kc for this reaction. Round your answer to 2 significant digits.

Answer: The value of equilibrium constant for given equation is $1.0\times 10^{-4}$

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}$

For hydrogen gas:

Given mass of hydrogen gas = 4.77 g

Molar mass of hydrogen gas = 2 g/mol

Volume of the solution = 8.9 L

Putting values in above expression, we get:

$\text{Molarity of hydrogen gas}=\frac{4.77}{2\times 8.9}\\\\\text{Molarity of hydrogen gas}=0.268M$

For water:

Given mass of water = 2.00 g

Molar mass of water = 18 g/mol

Volume of the solution = 8.9 L

Putting values in above expression, we get:

$\text{Molarity of water}=\frac{2.00}{18\times 8.9}\\\\\text{Molarity of water}=0.0125M$

For the given chemical equation:

$Fe_2O_3(s)+3H_2(g)\rightarrow 2Fe(s)+3H_2O(g)$

The expression of equilibrium constant for above equation follows:

$K_{eq}=\frac{[H_2O]^3}{[H_2]^3}$

Concentration of pure solids and pure liquids are taken as 1 in equilibrium constant expression.

Putting values in above expression, we get:

$K_{c}=\frac{(0.0125)^3}{(0.268)^3}\\\\K_{c}=1.0\times 10^{-4}$

Hence, the value of equilibrium constant for given equation is $1.0\times 10^{-4}$

6 0

4 years ago

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up of

Vedmedyk [2.9K]

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up of two atoms of nitrogen.

The correct option is C.

Explanation:

Nitrogen gas has the chemical formula $N_{2}$ , which means that two atoms of nitrogen element combined to form nitrogen gas.

The combination of two atoms of element nitrogen produce dinitrogen atom.

Dinitrogen is the nitrogen gas usually present in atmosphere of the earth in abundance.

2 atoms of nitrogen element

N + N = $N_{2}$

the gas is colorless and odorless formed at standard condition of temperature and pressure. The two nitrogen atoms are tightly bonded with triple bonds in between the atoms.

6 0

4 years ago