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brilliants [131]
2 years ago
10

0.5mol/dm3 hydrochloric acid is added gradually to a flask containing 20cm3 of 2 mol/ dm3 sodium hydroxide solution.

Chemistry
1 answer:
sweet-ann [11.9K]2 years ago
7 0

Answer:

The answer is B which is 40

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Which reaction can be used to make 2,3 dichloropentane?
lina2011 [118]

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B) substitution

Explanation:

2,3 dichloropentane is a hydrocarbon that contains two chlorine atoms in its chain. It has a chemical formula: C_{5} H_{10} Cl_{2}. In the compound, two hydrogen atoms has been substituted by two chlorine atoms.

A substitution reaction is a process by which an atom of a compound is being replaced by another atom to form a new compound due to a chemical reaction. This is one of the general properties of alkanes.

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3 years ago
What energy is required to remove the remaining electron from singly ionized helium?
skelet666 [1.2K]

To remove one electron from singly ionized helium, will require approximately 54.4 eV or 8.72 1020 J of energy.

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Anything that causes electrically neutral atoms and molecules to gain or lose electrons in order to become electrically charged atoms as well as molecules .

Therefore, the "To remove one electron from singly ionized helium, will require approximately 54.4 eV or 8.72 1020 J of energy."

To know more about electron

brainly.com/question/14135172

#SPJ4

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1 year ago
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