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kotykmax [81]
3 years ago
12

Students in a chemistry class are drawing molecular models based on molecular formulas they are given by the teacher.

Chemistry
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0
Sorry I need this marks
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Which of the following elements has the strongest ionization energy: Mg or Cl? Define ionization
Mila [183]

Answer:

Cl

Explanation:

The element Cl will have the strongest ionization energy from the given choices. Most non-metals have higher ionization energy compared to metals.

Ionization energy is the energy required to remove the most loosely held electron from the gaseous phase of an atom.

  • As you go from left to right on the periodic table, it increases progressive
  • From top to bottom, the ionization energy reduces significantly.
  • The attractive force between the protons in the nucleus and the electrons plays a very important role.
  • In metals, they have very large atomic radius, the attractive force on the outer electrons is very weak.
  • This is not the case in non-metals
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3 years ago
Imagine a rock comprised entirely of an unstable isotope. After three half-lives, how much of the parent isotope remains
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Answer:  After three half-lives 1/8 (12.5%) of the original sample remains

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2 years ago
List 6 uses of acids
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Answer: 1. Vinegar, used in the kitchen, is a liquid containing 3-6% acetic acid. It is used in pickles and in many food preparations.

2. Lemon and orange juice contains citric acid. Citric acid is used in the preparation of effervescent salts and as a food preservative.

3. Acids have been put to many uses in industry. Nitric acid and sulphuric acid are used in the manufacture of fertilizers, dyes, paints, drugs and explosives.

4. Sulphuric acid is used in batteries, which are used in cars, etc. Tannic acid is used in the manufacture of ink and leather.

5. Hydrochloric acid is used to make aqua regia, which is used to dissolve noble metals such as gold and platinum.

6. Sulphuric acid is used in manufacturing fertilizers such as super phosphate, ammonium sulpahte etc.

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An observation that does not deal with numbers?
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Qualitative observation. Which is data or information with your senses such as sight, taste, smell, and touch.
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A substance with a pH of 4.0?
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Tomato juice or acid rain
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