I think the answer is true but I'm not very sure
The electron dot diagram of helium has six fewer electrons than the electron dot diagram of neon.
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Helium gas would be the one to effuse faster as compared to krypton. This is because krypton is heavier than helium. Heavier molecules would require more energy to move so they tend to effuse slower than molecules that are lighter which will only require less energy.
Answer:
MASS: The amount of matter in an object. Mass is measured in the unit kg (kilograms). Example: Car = High mass. Paperclip = low mass.
VOLUME: The amount of space something takes up. Volume is measured in the unit m^3 (cubic meters). Examples: School = high volume. Paperclip = Low volume.
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Explanation:
A physical change is when a substance experiences a change in its physical characteristics.
For instance, cutting a diamond or a piece of glass
A chemical transformation is one in which one or more new compounds are created.
Iron rusting, for instance.
Both reversible and irreversible physical change are possible.
On the other hand, chemical change is a change that can never be reversed.
a) Electrolysis of molten MgCl2 involves chemical change since new materials are created and MgCl2 cannot be recovered.
The process of electrolysis involves passing an electric current through a substance to cause a chemical change.
Refer to this website to learn more about reversible changes: brainly.com/question/14831707
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