All categories

3 years ago

When a substance gains electrons in a chemical reaction, the substance is said to be activated. dissociated. reduced. oxidized?

2 answers:

6 0

It is reduced
for example:-

when water is electrolised

H2O ---> 2H+ +O-

- the oxygen atom gains an electron and is reduced to O-

vlada-n [284]3 years ago

3 0

Reduced is the right answer. You can remember it like that if it gains electron that means it will turn negative or will get reduced nuber. So itis reduction
Ihope it will help:)

You might be interested in

What does the oxidizing agent do in a redox reaction?

WITCHER [35]

I think the answer is c not completely sure

6 0

4 years ago

Electron configuration is a description of the shells, subshells, and orbitals occupied by electrons?

svetoff [14.1K]

I believe the answer is true.

7 0

3 years ago

The common laboratory solvent ethanol is often used to purify substances dissolved in it. The vapor pressure of ethanol , CH3CH2

OverLord2011 [107]

Answer:

Molar mass of solute is 183.4g/mol

Explanation:

Using Raoult's law it is possible to find moles of solute, thus:

$P_{solution} = X_{solvent}P_{solvent}^0$

Where pressure of solution is 53.15 mmHg, pressure of pure solvent is 54.68 mmHg and mole fraction is:

53.15 mmHg = X 54.68 mmHg

0.9720 = X

Mole fraction of solvent is defined as moles of solvent / total moles.

Moles of solvent are:

286.8g × (1mol / 46.07g) = 6.225 moles of ethanol.

That is:

$0.9720 = \frac{6.225mol}{Y+6.225mol}$

Where Y are moles of solute.

6.051 + 0.9720Y = 6.225

0.9720Y = 0.174

Y = 0.179 moles of solute

As mass of solute dissolved was 32.83g. Molar mass of solute is:

32.83g / 0.179mol = 183.4g/mol

4 0

4 years ago

The presence of a large population of _____________ indicates water depleted of oxygen and a high level of organic pollution.

blondinia [14]

The presence of a large population of sludgeworms indicates water depleted of oxygen and a high level of organic pollution.

The sludgeworms Tubifex is harvested and sold as tropical fish food since it is common near sewer outlets and serves as a sign of water or organic pollution. Polychaetes are crucial in rearranging the silt on the ocean floor.

Organic contamination happens when too much organic material, such sewage or manure, gets into the water.

There will be more decomposers and sludgeworms in a pond as the organic content accumulates. These decomposers and sludgeworms develop quickly and consume a lot of oxygen as they do so.

Hence, Sludgeworms are a sign of an abundance of oxygen-depleted water and significant levels of organic pollutants.

Learn more about Water pollution here brainly.com/question/1235358

#SPJ4

6 0

2 years ago

Air is classified as a mixture. What statement must be true about air? (4D)

Taya2010 [7]

Answer:

C.)Air is made up of atoms of one elements

6 0

3 years ago