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icang [17]
3 years ago
6

How to identify the number of protons neutrons and electrons and mass number?

Chemistry
1 answer:
jeka57 [31]3 years ago
5 0
1. Look at the atomic number of the element(located in upper left corner of the element box).This number represent the number of  protons of the element.In same of the elements the number of electrons and protons are the same. in other (negative) you have to calculate
2. Look at the atomical mass( located underneath the element, which is a sum of neutrons and protons.Round the mass to the whole number and substract the atomic number. That will be number of neutrons.
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Phoenix [80]

Answer:

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2 years ago
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kicyunya [14]

Answer: Option B

Explanation:

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hence, the correct answer is option B

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3 years ago
What is internal energy is
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Answer:

According to Brittanica, "Internal energy [is] the property or state function that defines the energy of a substance in the absence of effects due to capillarity and external electric, magnetic, and other fields."

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3 years ago
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Alexandra [31]

Answer:

1.38 moles

Explanation:

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3 0
3 years ago
We can change gas to a liquid by(Increasing, decreasing, removing) the temperature and (increasing, decreasing, removing ) the p
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Decreasing

Increasing

Explanation:

We can change gas to liquid by decreasing the temperature and increasing the pressure.

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learn more:

Phase change brainly.com/question/1875234

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