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3 years ago

Why does an atom of 23NA have 23 electrons

1 answer:

7 0

It is actually something standardized more so than theoretical, however in terms of atoms in general the electrons are based on the amount of electronic shells that an atom has and the amount of electrons that atom can accommodate. In the case of sodium, it has three shells with 2 electrons on the first shell which is the maximum, 8 on the second shell which is also the max and 1 on their final shell
So simply put an ATOM of Sodium (Na) has 23 electrons because it has 23 protons which is a fact
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Before we begin, let's first establish an understanding of basic terminology It may be harder than you think lo clearly define w

pentagon [3]

Answer:

oranges: contains chemical

heat: neither

sunlight: neither

photosynthesis: chemical reaction

bleaching protein: contains chemical

neutralization: chemical reaction

combustion: chemical reaction

vitamin K: contains chemical

rainbow: neither

marble: contains chemical

Explanation:

A chemical is a substance that is used in or made by chemical reactions. It is a matter with compositions related to the science of chemistry. In the question,

- orange contains chemical like vitamins, protein molecules etc.

- Bleaching protein contains chemicals that bring about the bleaching process.

- Vitamin k contains chemical elements

- marble contains Calcium, oxygen etc elements

A chemical reaction is that which involves the change in chemical properties of involved substances.

- Photosynthesis is the chemical reaction between carbon dioxide and water in the presence of sunlight to give glucose.

- Neutralization is the chemical reaction where an acid neutralizes a base to form a salt and water molecule.

- Combustion is the chemical reaction involving the burning of a chemical substance.

Some substances like sunlight, heat and rainbow are neither a chemical or chemical reaction.

3 0

3 years ago

A sample of hydrogen peroxide (H202) has 2.0 grams of hydrogen (H) and 32 grams of oxygen (O). What is the percent composition o

Leto [7]

Answer:

O = 94.117%

H = 5.882%

Explanation:

Hydrogen peroxide (H202) Molar Mass = 34g

OH 1- 17g/mol

H 1+ = 1g/mol

O = 16g/mol

2 Grams H

32 grams O

Percentage composition of Hydrogen peroxide

O = 32/34 = 94.117%

H = 2/34 = 5.882%

3 0

4 years ago

Please help. I’m terrible with weather

Harrizon [31]

first know the difference between the 4 seasons or weather's that occur and that will help get through

4 0

3 years ago

Samuel tripped while playing basketball and skinned his knee on the concrete. Many of the skin cells on that knee were killed or

morpeh [17]

Answer:

D. Existing skin cells near the injury reproduced to make new cells.

8 0

3 years ago

The freezing temperature of water is zero on both the "K" and "C" scales. True False

Vera_Pavlovna [14]

False, 0 degrees on the K scale is absolute zero.

8 0

3 years ago