Which statement describes one characteristic of an operating electrolytic cell?(1) It produces electrical energy.
(2) It requires an external energy source.
(3) It uses radioactive nuclides.
(4) It undergoes a spontaneous redox reaction.
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The temperature at which a substance in the liquid phase transforms to the gaseous phase refers to the substance's _______.
The energy carried by light waves is taken in by particles of matter.What type of wave interaction does this statement describe?AabsorptionВ.reflectedC.refractionO D.scattering
b. neutrons
c. protons or neutrons
d. protons, neutrons or electrons
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When neutrons are added to an atomic nucleus, energy is produced and this is called a fusion reaction. The answer is letter B. To be exact, two nuclei combine to produce a more stable nucleus. The positive charge on both nuclei result in a large electrostatic energy barrier to fusion.
The correct answer is c because the nuc are combing more protns and neutrons. The answer suposed to be protons and neutrons NOT PROTONS OR NEUTRONS?!!
(3) more mass and greater penetrating power
(4) more mass and less penetrating power
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Answer is (1) - less mass and greater penetrating power.
Alpha particle is a ₂⁴He nucleus while beta particles are electrons. Hence, the mass of alpha particle is greater than the mass of beta particle. But, the penetrating power is higher in beta particle than alpha particle. Alpha particles can be blocked by few papers but beta particles can go through those papers.
Answer: A beta particle has less mass and greater penetrating power.
Explanation:
Penetrating power is the power with which a particle travels or pass through a substance.
Since, it is known that mass of an alpha particle () is more than the mass of a beta particle (
). So, a particle that holds less mass can move easily from one place to another.
Therefore, beta particle can move faster as it has only one electron as compared to 2 protons of an alpha particle. Hence, interaction of beta particles is less with the atoms or materials through which it passes.
Therefore, we can conclude that compared to the mass and the penetrating power of an alpha particle, a beta particle has less mass and greater penetrating power.
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The right answer is physical change.
In the general sense, dissolution is the action of dissolving something, that is to say, of decomposing it by the separation of its parts.
In chemistry, dissolution is an intimate mixture of two bodies, at least one of which is liquid.
Eg: the dissolution of sugar in the water, the sugar will pass from the solid and dry state to the dissolved state so there is a physical change. The sugar is going to be surrounded by water molecules and form hydrogen bonds, so it can be a chemical change.
physical change
chemical change
the easy way to tell the difference is
a physical change is genrally reversable
it changes the look but not the composition
for example, water freezes into ice is physical change
a chemical change is generally not reversable (easily)
ex metal rusting, egg rotting
it changes theh composition itself
when a substance disolves, it actually merges and the molecules move around and sometimes bond
so it's a chemical change
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In my words though, the oxidation state helps with you knowing how many electrons are lost or gain by the reactant to produce its product and by knowing this you can then balance the electron transfer and ultimately the equations.
A) 20.00%
B) 25.00%
C) 50.00%
D) 12.50%
E) 100.0%
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The correctanswer between all the choices given is the 4th choice or letter D. I amhoping that this answer has satisfied your query and it will be able to helpyou in your endeavor, and if you would like, feel free to ask another question.