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kobusy [5.1K]
3 years ago
7

Water is considered a polar molecule because _____.

Biology
2 answers:
BlackZzzverrR [31]3 years ago
8 0

Answer:

The answer is It has partial positive and negative charges at each end.

Explanation:

When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule. Water is a polar molecule, because there is an irregular distribution of electron density in it. This means that water has a negative partial charge near the oxygen atom and a positive partial charge near hydrogen atoms.

lakkis [162]3 years ago
4 0

Answer: Option (a) is the correct answer.

Explanation:

A water molecule contains two hydrogen atoms and one oxygen atom. The chemical formula of water is H_{2}O.

Here, hydrogen is electropositive whereas oxygen atom is electronegative in nature. Hence, oxygen atom pulls electrons from hydrogen atom and as a result partial positive charge develops on hydrogen and partial negative charge develops on oxygen atom.

Therefore, molecule of water becomes polar in nature.

Thus, water is considered a polar molecule because it has partial positive and negative charges at each end.

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The answer is that it is correct
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When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods?
givi [52]

Answer:

refractory period is the correct answer.

Explanation:

A refractory period happens when the muscle and nerve are unable to respond to the additional stimulation temporarily.

A refractory period occurs because sodium ions channels are not activated during this period.

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During this period many are temporarily not interested in sexual activity and their penis can be hypersensitive or some of the men are not able to sustain an erection during this period.

5 0
3 years ago
All of the following are examples of courtship rituals except:
Phoenix [80]

Answer:

fighting

Explanation:

meaning of fighting?

1a : to contend in battle or physical combat especially : to strive to overcome a person by blows or weapons The soldiers fought bravely. b : to engage in boxing He will fight for the heavyweight title next month. 2 : to put forth a determined effort They were fighting to stay awake. transitive verb.

3 0
2 years ago
Read 2 more answers
Match the surface to its respective albedo score. fresh snow soil ocean (high-angle sun) ocean (low-angle sun) 0.95 arrowRight 0
HACTEHA [7]

Answer:

  • fresh snow → 0.9
  • soil → 0.2
  • ocean (high-angle sun) → 0.05
  • ocean (low-angle sun → 0.95

Explanation:

Albedo is the radiation reflected by the earth´s surface to the universe.

Albedo might be defined as a relation between reflected light from a particle and the incident light. It is the fraction of the incident radiation that is reflected by any object. If the surface is mostly clear and clean, most of the incident radiation is reflected. But if the surface is dark and rugose, most of the incident radiation is absorbed, and the temperature of the absorbing object will increase.

Albedo value is always inferior or equal to one and can be expressed as a percentage. The surface that reflects 100% of the incident light will have an albedo value = 1. But if the surface absorbs all the radiation and does not reflect any percentage, the albedo value = 0. Note: there is no real object that might reflect or absorb 100% of the incident radiation.

The importance of albedo is that it avoids high temperatures on the earth. There are many different surfaces with different albedo values. Global variations in albedo are natural processes due to exogenic and endogenic variations. But to these natural events, we must add all the variations caused by human beings´ actions, which increase greenhouse gases, decreasing albedo, and increasing global warming. The increase of greenhouse gases, such as CO₂, decreases albedo. The same occurs with atmospheric dust due to volcanic eruptions. Additional material interposes between the earth´s surface and the universe, decreasing the energy return to the universe.

  • fresh snow → 0.9  
  • soil → 0.2
  • ocean (high-angle sun) → 0.05
  • ocean (low-angle sun → 0.95

6 0
3 years ago
What best describes the carrying capacity?
Novosadov [1.4K]

the answer is option a:the maximum number of individuals that a place could have

5 0
3 years ago
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