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vivado [14]
3 years ago
13

Which phrase describes a scientific theory?

Chemistry
1 answer:
torisob [31]3 years ago
3 0

Answer:

C

Explanation:

Answer: C. A thoroughly tested and widely accepted explanation. Explanation: A scientific theory is a coherent statement or set of ideas that explains observed facts or phenomenon and are thoroughly tested and widely accepted.

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Answer:

Mn (s) + NiCl2 (aq) → MnCl2 (aq) + Ni

Explanation:

The order of displacement of metals from aqueous solution by another metal is defined by the activity series of metals.

The activity series arranges metals in order of reactivity and increasing electrode potentials. The less negative the electrode potential of a metal is, the less reactive it is and the lower it is found in the activity series.

Nickel has a less negative electrode potential than manganese hence it is displaced from an aqueous solution of its salt by manganese spontaneously.

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