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Tems11 [23]
3 years ago
5

True or false. elements in the same period have the same number of valence electrons

Chemistry
1 answer:
saul85 [17]3 years ago
4 0
False. elements in the same period have the same number of shells while elements in the same group have the same number of valence electrons.
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Which describes the molecule below?
Ira Lisetskai [31]
C. A lipid with three unsaturated fatty acids.
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3 years ago
Balance the equation for magnasuin and oxygen to yield magnasuimoxide
Minchanka [31]

Answer:

2Mg + O₂  →  2MgO

Explanation:

Chemical equation:

Mg + O₂  →  MgO

Balanced chemical equation:

2Mg + O₂  →  2MgO

The balanced equation s given above and it completely follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

Steps to balanced the equation:

Step 1:

Mg + O₂  →  MgO

Mg = 1         Mg = 1

O = 2           O = 1

Step 2:

2Mg + O₂  →  MgO

Mg = 2         Mg = 1

O = 2           O = 1

Step 3:

2Mg + O₂  →  2MgO

Mg = 2         Mg = 2

O = 2           O = 2

6 0
3 years ago
20 Points!! Which of the following is a synthesis reaction? AgNO3+NaCI--> AgCI+NaNO3
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Which state of matter has atomic spacing that is close together and definite shape? gas liquid solid plasma none of the above
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Atoms are bonded together in a different order in
Savatey [412]

Answer:

answer.A

Explanation:

that is my answer

4 0
3 years ago
Read 2 more answers
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