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poizon [28]
3 years ago
12

An atom has 14 protons, 16 neutrons, and 14 electrons. What is its mass number?

Chemistry
1 answer:
Andrews [41]3 years ago
6 0

The answer is 30.

Explanation:

The total number of protons and neutrons in a nucleus is called mass number. So 14 proton plus 16 neutron is = 30 mass number.

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A balloon containing helium gas expands from 230
Anit [1.1K]

The answer for the following problem is mentioned below.

  • <u><em>Therefore the final  moles of the gas is 14.2 × </em></u>10^{-4}<u><em> moles.</em></u>

Explanation:

Given:

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(V_{1}) represents the initial volume of the gas

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(n_{1}) represents the initial  moles of the gas

(n_{2}) represents the final moles of the gas

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