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wel
2 years ago
12

The sum of the number of proteins and neutrons in an atoms nucleus is its __________ ___________.

Chemistry
2 answers:
otez555 [7]2 years ago
8 0

Answer:

Mass Number

Explanation:

In nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom.

Please vote brainliest!

marishachu [46]2 years ago
4 0

Answer:

mass number

Explanation:

The mass number refers to the sum of the number of protons and neutrons present in the nucleus of an atom and denoted by A.

Mass number = Number of protons + Number of neutrons.

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The empirical formula of the compound with the percent composition C 18.1%, H 2.27%, Cl 79.8% is C₂H₃Cl₃.

<h3>What is an empirical formula?</h3>

It is the minimum ratio between the elements that form a compound.

  • Step 1: Divide each percentage by the molar mass of the element.

C: 18.1/12.01 = 1.51

H: 2.27/1.01 = 2.25

Cl: 79.8/35.45 = 2.25

  • Step 2: Divide all the numbers by the smallest one.

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  • Step 3: Multiply all the numbers by 2 so all of them are whole.

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The empirical formula is C₂H₃Cl₃.

The empirical formula of the compound with the percent composition C 18.1%, H 2.27%, Cl 79.8% is C₂H₃Cl₃.

Learn more about empirical formula here: brainly.com/question/1603500

#SPJ1

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