Why is silicon used to make PV cells

Answers

Answer 1

Answer: Silicon is used in producing Pv celss because cells made from the crystallized polycrystalline silicon have efficiencies in the range of 14-18% and a moderate price.

Related Questions

Which of the following is a TRUE statement?a.A molecule always has three types of elements presentb.Compounds always include the elements hydrogen and sodiumc.Compounds include things we use in our everyday livesd.All elements prefer to hang out with other elements and form molecules
What element has three half-filled to orbitals in the 3p sublevela) nitrogenb) phosphorus c) aluminum d) boron
Which development was a direct result of thebaby boom that followed World War II?(1) decrease in school construction(2) increase in suburbanization(3) decline in crime rates(4) rise in immigration
Use the drop-down menus to identify the strongest intermolecular force that is likely to affect each of thesamples shown below.Η Ο ΗTIL 1H-C-C-C-H1-CIlodine monochloride, ICIHHAcetone, C3H60H-FA mixture of water (H2O) and hydrogen fluoride(HF)
Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. Which is most likely to result in the greatest amount of error in their scientific experiment?

Fluorine, chlorine, bromine, and iodine are part of a family called what?

Answers

The correct answer is "halogens." Fluorine, chlorine, bromine, and iodine are part of a family called halogens. In the periodic table, it is the column that is beside, left of the noble gases. The name 'halogen' means 'salt-producing'.

A compound is formed when 171.2 g of carbon reacts with 28.8 g of hydrogen. What is the mass percent of hydrogen in the compound

Answers

Following the law of conservation of mass, the mass percent of hydrogen in the resulting compound is 14.4%(wt/wt). This is assuming that all of the carbon reacts with all of the hydrogen. The solution is as follows:

mass % = mass hydrogen*100/total mass = 28.8*100/(28.8+171.2) = 14.4%

Answer:

For Edmentum/Plato users, the correct answer is A. 14.4%

Knowledge of atomic structure has evolved over time. Thomson discovered that atoms contain electrons, Rutherford discovered that most of the mass of an atom is concentrated in its center, and Bohr discovered that electrons orbit the nucleus. Taken together, what do these discoveries demonstrate?
A. the cumulative nature of science
B. the quantitative nature of science
C.the importance of thorough review of scientific papers
D. the importance of not publishing science until it is final

Answers

I believe the correct response would be A. The cumulative nature of science. How experimental evidence and ideas made by many scientists have accumulated and or built up to have a more understandable and or clear view of a particular scientific topic, and or principle.

PLEASE HELPSusana heats up a sample of red crystals. While the sample is being heated, a gas is released and a blue powder is left after the heating. Is the sample of red crystals an element or a compound? Explain your answer.

Answers

Because more than one substance was released (following a color change signifying a chemical reaction), the sample was indeed, a compound.

Sample response: Susana's red crystal sample is a compound because it was broken down into a gas and blue powder. It is not an element because elements cannot be broken down into simpler substances by ordinary means, such as heating.

This is late but if anyone needs it here you go.

According to one acid-base theory, water acts as an acid when an H2O molecule(1) accepts an H+ (3) accepts an H-
(2) donates an H+ (4) donates an H-

Answers

Final answer:

According to the Brønsted-Lowry acid-base theory, water is acting as an acid when a water molecule donates an H+ ion. This also illustrates that water can behave as both an acid and a base due to its amphoteric nature.

Explanation:

According to the Brønsted-Lowry theory of acids and bases, water acts as an acid when a H2O molecule donates an H+. This is because an acid is defined as a substance that can donate a proton, which is a hydrogen ion (H+). Water (H2O) can act as both an acid and a base due to its amphoteric nature, but in this context where we have to choose between these four options, water acts as an acid when it donates an H+. An example of this is when water donates an H+ to ammonia (NH3), producing the ammonium ion (NH4+) and a hydroxide ion (OH-).

Learn more about Acid-Base Theory here:

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When an individual has an energy surplus, he or she stores the extra energy as: A. nucleic acids. B. lipids. C. None of the answer options is correct. D. carbohydrates. E. proteins.

Answers

Answer: B. lipids

Explanation:

When an individual has an energy surplus, the extra energy is stored in the body as lipids. Lipids are used for energy in the long term

Other Questions

A radioactive isotope has a half-life of 10 minutes.At the start of an experiment, the activity of a sample of this isotope was 800 countsper second after allowing for background radiation.Calculate how long it would be before the activity fell from 800 counts per second to200 counts per second.

Select all that apply. The three subatomic particles are _____. neurons photons protons neutrons charges electrons

All the elements of a family in the periodic table have what feature in common? A) They all have similar chemical properties. B) They all have the same number of protons in the nucleus. C) They are all located in the same horizontal row or period. Eliminate D) They all have the same number of electrons in the electron cloud.

Starch and cellulose are both produced by plants, yet one is easily digested by animals and the other is not. Discuss the differences in the structures of these two molecules and how this may impact whether they can be digested.