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marishachu [46]
3 years ago
6

Zinc metal reacts with hydrochloric acid to produce hydrogen gas and an aqueous solution of zinc(ii) chloride. what is the reduc

ing agent in this reaction? maybe prof. umbridge was right in trying to remove her.
Chemistry
1 answer:
Mila [183]3 years ago
4 0
Answer: zinc is the reducing agent.

Explanation:

1) Reducing agent is the agent that releases electrons, is oxidized (its oxidation number increases)   and causes the reduction of the other agent (the reduced spices reduces its oxidation state).

2) Chemical equation:

Zn(s) + HCl (aq) → H2(g) + ZnCl2(s)

3) determine the oxidation states of each spices

Zn (s): oxidation state = 0
Zn in ZnCls: oxidation state = + 2.

Therfore Zn was oxidized and is the reducing agen.

H in HCl: oxidtation state = +1

H in H2: oxidation state = 0

Therefore H2 was reduced (it is the oxidizing agent).
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Which option states the principle behind the law of conservation of mass and the law of conservation of energy?
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Answer:

A

Explanation:

The law of conservation of mass states that matter can never be created nor destroyed but can be converted from one form to another.

The law of conservation of energy posits that energy cannot be created nor destroyed but can be converted from one form to another.

These laws are the basic laws of existence. Although the laws have been adjusted, they still form the basic principle behind several scientific laws and are responsible for a whole lot of scientific advancements.

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Answer:

D

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Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

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