What kind of energy transformation occurs in a gasoline-powered car? A.
Chemical energy is converted into mechanical energy.
B.
Mechanical energy is converted into light energy.
C.
Light energy is converted into sound energy.
D.
Sound energy is converted into chemical energy.
Answers
Related Questions
Answer the following questions: On a 10-fold dilution of a weak acid, the pH will ______________ . On a 10-fold dilution of a weak base, the pH will ______________. If one adds a very small amount of strong base to a buffered solution, the pH will _______________. Can you make a buffer using a strong acid
What is the mass of an atom that has 3 protons, 4 neutrons, and 3 electrons? 4 6 7 10
Na2S2O3 + KBrO3 + H2SO4 = Na2S4O6 + K2SO4 + Na2SO4 + Br2 + H2O
C2H5OH is able to dissociate in water to conduct an electric current. This compound could be classified as
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Answer: Covalent
Explanation:
A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals. Example:
An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal. Example:
Thus bond formed by sharing of electrons is covalent bond.
Covalend bonds share
Ionic bonds transfer
B. An electronegativity difference of greater than 2.7 between the atoms
C. An electronegativity difference of less than 1.7 between the atoms
D. An electronegativity difference of less than 2.7 between the atoms
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Answer is: A. An electronegativity difference of greater than 1.7 between the atoms.
Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.
For example, in ionic salt sodium fluoride (NaF), fluorine has electronegativity approximately χ = 4 and sodium χ = 1 (Δχ = 4 - 1; Δχ = 3), fluorine attracts electron and it has negative charge and sodium has positive charge.
A: Scientists have not yet gotten a fusion reaction to happen on Earth.
B: Per gram of fuel, fission releases more energy than fusion.
C: The energy from fusion cannot yet be converted to electricity.
D: Fusion requires conditions that use too much energy to maintain.
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According to the nuclear fission and nuclear fusion reactions,energy from fusion cannot yet be converted to electricity.
What is nuclear fission and nuclear fusion?
There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.
In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.
In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.
Learn more about nuclear fission and nuclear fusion,here:
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Fusion results in a lot of energy. The sun uses fusion reactions to burn. So, if we were using fusion reactions, we would have little suns going off. Nuclear bombs often use a combination of fission and fusion reactions to maximize devastation. However, we do not currently have the ability to control or convert the energy produced by a fusion reaction.
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scratch test
sulfur
anitmony
selenium
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Answer: Option (a) is the correct answer.
Explanation:
Electric current is the flow of electrons and an atom that has free electrons will be able to carry current easily.
Hence, electronic configurations of the given elements are as follows.
Tin (Sn) -
Sulfur (S) -
Antimony (Sb) -
Selenium (Se) -
So, sulfur and selenium being non-metals won't be able to conduct electricity. Whereas both tin and antimony are poor metals but they are able to conduct electricity.
Antimony has half filled p-shell so, it will not lose its valence electrons as it is stable. Whereas tin will easily lose its valence electrons to become stable.
Thus, we can conclude that tin is the element that is most likely to carry electric current easily.
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2a : the composition and chemical properties of a substance
the chemistry of iron
b : chemical processes and phenomena (as of an organism)