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slega [8]
4 years ago
8

Which answer choice lists the number and type of elements in a compound in the way that is close to their actual arrangement?

Chemistry
2 answers:
Novay_Z [31]4 years ago
7 0

Answer: Option (b) is the correct answer.

Explanation:

A structural formula is defined as the formula that shows symbols of atoms present in the formula along with the bonds present between them.

For example, structural formula of ethene is H_{2}C=CH_{2}.

This structural formula shows that there exists a double bond between the two carbon atoms which the hydrogen atoms are attached to each carbon atom via single bond.

Whereas a chemical formula only represents the number of atoms present in a compound. But it does not tell about the arrangement of atoms.

For example, chemical formula of sulfuric acid is H_{2}SO_{4} and this does not show how atoms are exactly arranged.

On the other hand, both space-filling model and ball-and-stick model tells us about how exactly atoms are arranged to each other. This is because both these models provide actual arrangement in a 3-dimensional structure of a compound or molecule.

Hence, with the help of space-filling model  and ball-and-stick model it becomes easier to visualize the structure of a compound.

Thus, we can conclude that out of the given options structural formula provides the number and type of elements in a compound in the way that is close to their actual arrangement.

bogdanovich [222]4 years ago
3 0

the answer is b. structural formula

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.400 moles of CO2 gas are confined in a 5.00-liter container at 25 °C. Calculate the pressure exerted in atmospheres and mm Hg.
solong [7]

The pressure exerted by 0.400 moles of carbon dioxide in a 5.00 Liter container at 25 °C would be 1.9563 atm or  1486.788 mm Hg.

<h3>The ideal gas law</h3>

According to the ideal gas law, the product of the pressure and volume of a gas is a constant.

This can be mathematically expressed as:

pv = nRT

Where:

p = pressure of the gas

v = volume

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R = Rydberg constant (0.08206 L•atm•mol-1K)

T = temperature.

In this case:

p is what we are looking for.

v = 5.00 L

n = 0.400 moles

T = 25 + 273

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Now, let's make p the subject of the formula of the equation.

p = nRT/v

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Recall that: 1 atm = 760 mm Hg

Thus:

1.9563 atm = 1.9563 x 760 mm Hg

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In other words, the pressure exerted by the gas in atm is 1.9563 atm and in mm HG is 1486.788 mm Hg.

More on the ideal gas law can be found here: brainly.com/question/28257995

#SPJ1

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MissTica

Answer:

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Explanation:

Hope this helps u

Crown me as brainliest:)

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