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3 years ago

12

J.j thomson a british physicist was the first to identify the

1 answer:

Shalnov [3]3 years ago

5 0

<span>J.j thomson a british physicist was the first to identify the electron in 1987</span>

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Does a helium balloon have a larger volume when it is heated or cooled?<br>

Nadusha1986 [10]

Heated, it shrinks when cooled

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3 years ago

Which atom has only one pair of electrons in its outermost energy level?

inysia [295]

Answer:

i belive A, i cold be wrong tho, pls tell me if im right if you fully find out

ght. Explanation:

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2 years ago

What is the molecular polarity of the following lewis structure

puteri [66]

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2 years ago

Which change occurs when an atom in excited state returns to ground state? 1 energy is emitted 2energy is absorbed 3 the number

kozerog [31]

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2 years ago

Read 2 more answers

- Standard state refers to

yulyashka [42]

Answer: The standard state refers to 1 atm and $25^{o}C$ .

Explanation:

It is known that a chemical/substance can either be present in a solid, liquid or gaseous state.

So, when the phase of a substance like solid, liquid or gas is present at 1 atmosphere pressure and at a temperature of $25^{o}C$ then it known as standard state of substance.

Thus, we can conclude that standard state refers to 1 atm and $25^{o}C$ .

4 0

2 years ago