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coldgirl [10]
3 years ago
11

Which of the following is a balanced chemical equation?

Chemistry
1 answer:
True [87]3 years ago
8 0

Answer:

equation number 3 is balanced.

hope it helps ☺️!

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If the [H+] is 3.5x10-4, what is the [OH-]?
slava [35]

Answer:

2.90 x 10⁻¹¹moldm⁻³

Explanation:

Given parameters:

[H⁺]  = 3.5 x 10⁻⁴mol/dm³

Unknown

[OH⁻]  = ?

Solution;

The ionic product of water can be used to solve this problem. It has been experimentally determined to be  1 x 10⁻¹⁴mol² dm⁻⁶

             [H⁺] [OH⁻]  = 1 x 10⁻¹⁴

Therefore;

             [OH⁻]   = \frac{1  x 10^{-14} }{H}    = \frac{1  x  10^{-14} }{3.5 x 10^{-4} }   = 0.29 x 10⁻¹⁰moldm⁻³

                                                            = 2.90 x 10⁻¹¹moldm⁻³

8 0
3 years ago
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Answer:

Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal.

Explanation:

Organic chemistry is the scientific study of the structure, properties, composition, reactions, and synthesis of organic compounds

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3 years ago
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174 \; \text{protons} / (29 \; \text{copper atoms} \cdot \text{proton}^{-1}) = 6 \; \text{copper atoms}

Thus 174 protons would make at most 6 copper atoms. However, it would take 174 extra electrons (29 per atom) and even more neutrons than that to construct neutral copper atoms with stable nuclei.

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Explanation:

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