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masya89 [10]
4 years ago
13

What is the smallest unit that makes up matter? A. molecules B. chemicals C. atoms D. alloys

Chemistry
2 answers:
madam [21]4 years ago
8 0

The smallest unit that makes up matter is atoms.

Atoms are the smallest units in life. Atoms are so small that you can't even see them. Even a small thing thing is made up of thousands of atoms.

Your answer is C. atoms

Kamila [148]4 years ago
7 0

Hello there!

An Atom would be considered to be the smallest unit that would make up matter. If were to ever see a picture of an atom, they would consists of a proton, neutron, electron, and a nucleus. And all this would be called a Atom.

Your answer: Atom

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The volume of a gas is 550 mL at 960 mm Hg and 200.0 C. What volume
Masja [62]

Answer:

The volume will be 568.89 mL.

Explanation:

Boyle's law says that "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure"

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

or P * V = k

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. That is, the pressure of the gas is directly proportional to its temperature. Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T}=k

Where P = pressure, T = temperature, K = Constant

Finally, Charles's law indicates that as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

\frac{V}{T}=k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\frac{P*V}{T} =k

Studying an initial state 1 and a final state 2, it is fulfilled:

\frac{P1*V1}{T1} =\frac{P2*V2}{T2}

In this case:

  • P1= 960 mmHg
  • V1= 550 mL
  • T1= 200 C= 473 K (being 0 C=273 K)
  • P2= 830 mmHg
  • V2= ?
  • T2= 150 C= 423 K

Replacing:

\frac{960 mmHg*550 mL}{473K} =\frac{830 mmHg*V2}{423 K}

Solving:

V2=\frac{423 K}{830 mmHg} *\frac{960 mmHg*550 mL}{473K}

V2= 568.9 mL

<u><em>The volume will be 568.89 mL.</em></u>

4 0
3 years ago
Which of the following is a reasonable ground-state electron configuration?
sladkih [1.3K]
The reasonable ground-state electron configuration is: 1s2 2s2 2p6 3s2 3p6 4s2 4d8
6 0
3 years ago
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2. Rank the metals in group 2 according to their relative reactivities.
Inga [223]

Answer:

Explanation:

https://www.slideshare.net/Thivyaapriya/inorganic-chemistry-group-2

Has all the info you need!

7 0
3 years ago
How many electrons are in the highest occupied energy level of these atoms?
Yuliya22 [10]
Excuse me not giving an explanation; I haven't even learned chemistry before. I usually give explanations for math/english.

I think it would be for flourine: 7
aluminum: 8
can't help with the rest...
sorry!
8 0
4 years ago
Why is n-hexanol is not soluble in H2O​
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Answer:

Ethanol is soluble in water because it has a hydroxyl group which allows it to form hydrogen bonds with the water molecules. This is why hexanol is not soluble in water.

8 0
3 years ago
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