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Olin [163]
2 years ago
10

A representation of chemical reaction​

Chemistry
1 answer:
Levart [38]2 years ago
7 0
Photosynthesis should be an answer
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Calculate the molarity of each of the following solutions. Use the periodic table if necessary.
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Answer: 2.8

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Calcium atoms have 20 protons, but tend to form ions with a 2+ charge. How
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Answer: With atomic number 20, calcium atoms have 20 positive protons, and the ion has only 18 electrons, which means the net charge is +2. Calcium ions are essential for muscle contractions, nerve impulses, and bone maintenance.

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Describe the three main sub?atomic particles. Include mass (with units), charge and location for each.
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Electron - negligible mass, negative charge, orbits the nucleus
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3 years ago
What is an ionic bond
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Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.
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III. For the following four sections: If you are given the formula, name the
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Answer:

15.Potassium oxide

16.Calcium chloride

17.Aluminium sulphide

18.CaS

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15.K is the chemical symbol of Potassium and generally the name of the non-metal at the end of a formula has the suffix '-ide' and since O is oxygen, the name becomes Potassium oxide.

16. The same applies here. Ca is Calcium and Cl is Chlorine but since its the non-metal at the end, it ends in -ide. So Calcium chloride.

17.The same applies here too. Al is Aluminium and S is Sulphur so Aluminium sulphide.

18. Calcium's symbol is Ca and that of Sulphur is S and that gives the formula CaS.

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