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erma4kov [3.2K]
3 years ago
6

Is oxygen a beginning substance or ending substance?

Chemistry
2 answers:
stiks02 [169]3 years ago
4 0

Answer:

Explanation:

The substances that are present at the beginning are called reactants and the substances present at the end are called products. Sometimes when reactants are put into a reaction vessel, a reaction will take place to produce products. Reactants are the starting materials, that is, whatever we have as our initial ingredients.Oxygen, a colorless, odorless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere. Oxygen forms compounds by reaction with practically any other element.

Vlad1618 [11]3 years ago
4 0

Answer:

<h2><u><em>A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.</em></u></h2><h2><u><em></em></u></h2>

<u><em></em></u>

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A ____________ are large molecules made up of repeating units, referred to as monomers.
ziro4ka [17]

Answer: polymers

A polymer are large molecules made up of repeating units, referred to as monomers.

Explanation:

Polymers are macromolecule with large size and high molecular mass. They consists of several repeating units of simpler molecules known as monomers.

Examples of polymers found in plants are

- starch composed of several glucose units linked by glycosidic bonds

- cellulose composed of several repeating glucose units linked by glycosidic bonds as well

An example of polymers found in animals is

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4 0
3 years ago
Read 2 more answers
What will happen to the following equilibrium if Cl2
REY [17]

The following equilibrium will shift in the direction of the product:

<h3>Further explanation</h3>

Given

Reaction

4HCl + O₂ → 2H₂O + 2Cl₂

Cl₂  was removed

Required

Equilibrium changes

Solution

Reaction = - action

adding the products ⇒ Shifts in the direction of the reactants

reducing the products ⇒Shifts in the direction of the products

Cl₂ as a product, so if Cl₂ is taken or reduced, the reaction will try to maintain system equilibrium by moving to the right (product formation) ⇒ Shift in the direction of the product:

7 0
3 years ago
PLEASE HELP I REALLY CANT FAIL THIS. THIS DETERMINS IF I PASS MY GRADE. What are the most basic building blocks of all organisms
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Answer:

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7 0
3 years ago
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tangare [24]
Radon is <span>not a source of air pollution related to human activities</span>
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