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lora16 [44]
3 years ago
6

What is the lewis dot structure of phosphorus decasulfide

Chemistry
1 answer:
Gnoma [55]3 years ago
8 0
Https://www.youtube.com/watch?v=7ZtLaCucV98
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What defines the mass number of an isotope? the sum of the neutrons and protons the sum of the neutrons and electrons the number
Scorpion4ik [409]

Answer:

The mass number of an isotope is the sum of neutrons and protons.

Explanation:

In any elemental isotope, the only things that will affect molar mass and mass number is the number of protons and neutrons. Electrons are not counted because we usually assume they are equal to the amount of protons and have no weight.

Protons are what gives the element its atomic number and the neutrons determine the type of isotope it is within the element.

For instance:

There can be a regular Carbon - 12

But there are isotopes like Carbon - 13 and Carbon - 14.

*The number of protons stays the same but the number of neutrons are different

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3 years ago
Which expression represents the percent by mass of nitrogen in NH4NO3?
podryga [215]
W(N)={2M(N)/M(NH₄NO₃)}*100%

w(N)={2*14.0 g/mol/80.0 g/mol}*100% = 35%
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Balance this equation. If a coefficient of "1" is required, choose "blank" for that box. ____CO +____ O2 → ____CO2
Black_prince [1.1K]
<h3><u>Answer;</u></h3>

2, Blank, 2 ;

<h3><u>Explanation;</u></h3>

The balanced chemical equation would be;

2 CO + O2 → 2 CO2

Balancing a chemical equation ensures that the number of atoms of each element are equal on both the reactants side and the products side. This ensures that the law of conservation of mass is obeyed in chemical reactions.

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The shape and the color
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