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fomenos
3 years ago
8

Match the term with its description.

Chemistry
2 answers:
Ilia_Sergeevich [38]3 years ago
8 0

pH(D) A compound that increases the hydroxide ions (OH-) when it is dissolved in a solution

Inga [223]3 years ago
3 0

Answer:

Acid-A compound that increases hydrogen ions (H+) when it is

Base-A compound that increases the hydroxide ions (OH−) when it is  dissolved in a solution

Ions- An atom or molecule that has a positive or negative charge

pH-A value from 0 to 14 that is used to specify how acidic or basic a  compound is when it is dissolved in water

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Complete the following nuclear equations by entering the missing isotope:
Margarita [4]

The nuclear equation :

₈₂²¹⁴Pb ⇒ ₈₃²¹⁴Bi + ₋₁⁰e

<h3>Further explanation </h3>

Given

₈₂²¹⁴Pb

beta β ₋₁e⁰ particles

Required

Nuclear equation

Solution

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

  • alpha α particles ₂He⁴
  • beta β ₋₁e⁰ particles
  • gamma particles ₀γ⁰
  • positron particles ₁e⁰
  • neutron ₀n¹

The principle used is the sum of the atomic number and mass number before and after the decay reaction is the same

The reaction

₈₂²¹⁴Pb ⇒ X + ₋₁⁰e

The element X has

-the atomic number = 82 + 1 = 83

-the mass number = 214

In the periodic system, the element with atomic number 83=Bismuth

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3 years ago
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attashe74 [19]

Answer

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Explanation:

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dybincka [34]

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Synthetic fibers, like plastic, are derived from organic compounds. These fibers have been chemically changed by humans to last
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The downside of this is that the longer lasting material is more difficult to break down.

Both natural fibers and synthetic fibers are polymer materials. Polymer materials are materials that are made by the agglomeration of small molecules called monomers.

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