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exis [7]
3 years ago
7

Write the skeleton equation: Cobalt and Sulfur react to produce Cobalt (II) Sulfide

Chemistry
1 answer:
lidiya [134]3 years ago
7 0

Answer:

Co + S = Co2S3

Explanation:

pretend = is the arrow

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anastassius [24]

Answer:

should be  58.6c

Explanation:

6 0
3 years ago
Why methylene blue is blue
bixtya [17]

Methylene blue indicates the presence of oxidizing agents because it is oxidized itself by these compounds. When electrons are stripped from methylene blue, the resulting molecule imparts a blue color to the solution--giving a clear sign of a chemical change.

7 0
3 years ago
6) How many valence electrons does an atom of Cu possess?
agasfer [191]
The answer is c)11 because copper has 11 valence electrons
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3 years ago
Which statement best describes a property of a compound? A compound is made up of a single atom. B. A compound is made up of man
Pavlova-9 [17]

Answer:

D. A compound can be separated into two or more elements through a chemical reaction.

Explanation:

By method of elimination, we are going t obtain the correct  option.

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This is wrong because, a compound can contain more than one atom.  An example is H2O

B. A compound is made up of many atoms that are all the same type.

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C. A compound can be separated into two or more elements through physical processes.

This is wrong. H2O being a compound cannot be separated by ordinary physical means.

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This is the correct option.

5 0
3 years ago
Why reducing power of elements decrease, on moving from left to right in a period?
masya89 [10]
The atom or an ion which loses electron /electrons is called reducing agent.

Whole moving across a period from left to right metallic character decreases, therefore reducing power element decreases.
3 0
3 years ago
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