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s2008m [1.1K]
3 years ago
9

Which element has an atom in the ground state with a total of three valence electrons?

Chemistry
2 answers:
trapecia [35]3 years ago
6 0

The ground state electron configuration of aluminum is 1s² 2s²2p⁶ 3s² 3p¹

The ground state electron configuration of lithium is  1s² 2s¹

The ground state electron configuration of phosphorous is  1s² 2s²2p⁶ 3s² 3p³

The ground state electron configuration of scandium is  1s² 2s²2p⁶ 3s² 3p⁶3d¹ 4s²

In the ground state Al has 3 valence electrons, 2 electrons in the 3s orbital and 1 electron in the 3p orbital. The valence shell of Al is 3.


fiasKO [112]3 years ago
5 0
Aluminum is the element that has an atom in the ground state with a total of three valence electrons
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Which is an example of a non aqueous solution
damaskus [11]

Answer: gasoline

Explanation:

An aqueous solution is one which contains water as a solvent. A non- aqueous solution is the one in which the solvent of the solution is a liquid but it is not water.

Among the options given, gasoline is the correct option. This is because of the fact that gasoline is a crude oil which does not include water as an ingredient.

3 0
3 years ago
Read 2 more answers
The liquid dispensed from a burette is called ___________.
11Alexandr11 [23.1K]

The liquid that is been dispensed during titration as regards this question is Titrant.

  • Titration can be regarded as  common laboratory method that is been carried out during quantitative chemical analysis.
  • This analysis helps to know the concentration of an identified analyte.
  • Burette can be regarded as laboratory apparatus.

It is used in the in measurements of variable amounts of liquid ,this apparatus helps in dispensation   of liquid, especially when performing titration.

  • The specifications is been done base on their volume, or resolution.
  • The liquid that comes out of this apparatus is regarded as Titrant, and this is gotten during titration process, which is usually carried out during volumetric analysis.

Therefore, burrete is used in volumetric analysis.

Learn more at:

brainly.com/question/2728613?referrer=searchResults

8 0
3 years ago
Read 2 more answers
a beaker of benzene is at room temperature. what is its vapor pressure. Is this vapor pressure large enough to cause the benzene
Serhud [2]

Answer:

(1). The vapor pressure is 91 mmHg at 20°C.

(2). No, benzene will not boil at sea level.

Explanation:

Benzene, C6H6 is an aromatic, liquid compound with with molar mass of 78.11 g/mol and Melting point of 5.5 °C. One of the importance or the uses of benzene is in the making of fibres and plastics.

The vapour pressure of benzene can be gotten from the table showing the vapor pressure of different liquids.

Boiling point can simply be defined as the point or the temperature in which the vapor pressure is the same with the atmospheric pressure.

The atmospheric pressure is 760mmHg, while the vapor pressure at sea level is at the temperature of 15°C which is equal to 71 mmHg( from the table showing the vapor pressure of different liquids).

71 mmHg is not equal to 760 mmHg, thus, at sea level Benzene will not boil.

8 0
2 years ago
3.7x10^7 and 3.30x10^8 written in scientific notation
kodGreya [7K]

Answer:

1) 37100000

2) 330000000

Explanation:

1) 3.7 x 10^7 = 37100000

2) 3.30 x 10^8 = 330000000

(Hope this helps can I pls have brainlist (crown)☺️)

3 0
2 years ago
At a temperature of -25 °C, a sample of gas in a rigid container exerts a pressure of 55.8 kPa. At what temperature will the pre
never [62]
<h3>Given:</h3>

P_{1} = \text{55.8 kPa}

T_{1} = -25^{\circ}\text{C + 273 = 248 K}

P_{2} = \text{145 kPa}

<h3>Unknown:</h3>

T_{2}

<h3>Solution:</h3>

\dfrac{P_{1}}{T_{1}} = \dfrac{P_{2}}{T_{2}}

T_{2} = T_{1} \times \dfrac{P_{2}}{P_{1}}

T_{2} = \text{248 K} \times \dfrac{\text{145 kPa}}{\text{55.8 kPa}}

\boxed{T_{2} = \text{644 K}}

4 0
3 years ago
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