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larisa [96]
1 year ago
11

Determine the number of protons, neutrons, and electrons in the following:

Chemistry
1 answer:
Finger [1]1 year ago
8 0

The ⁴⁰₁₈X is the symbol for ⁴⁰₁₈Ar - atom and it has 18 protons, 18 electrons, and 22 neutrons.

<h3>What is Mass number ?</h3>

Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.

In the given element,  ⁴⁰₁₈X,  Subscript 18 is the number of proton and is also equal to the number of electron. While supercript 40 is the atomic mass.

The number of neutrons is given by subtracting the proton number from the mass number.

Therefore,

Number of Neutron = Mass Number - Atomic Number

                                 = 40 - 18

                                 = 22 Neutrons

Learn more about Mass number here ;

brainly.com/question/18803094

#SPJ1

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A 2.50-l volume of hydrogen measured at â196 °c is warmed to 100 °c. calculate the volume of the gas at the higher temperature
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<span>V2 = 12.09 L</span>

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3 years ago
A 9.79 mol sample of freon gas was placed in a balloon. Adding 3.50 mol of freon gas to the balloon increased its volume to 21.8
aivan3 [116]

Answer:

16.06 L was the initial volume of the balloon.

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4 0
3 years ago
Consider the combustion of octane (C8H18)
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The balanced equation for the above reaction is as follows;
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therefore mass of CO₂ formed - 13.45 mol x 44 g/mol = 591.8 g
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