After one half-life, 8 g of radioactive isotope will remain in the sample.
<h3>What is radioactivity?</h3>
The act of producing radiation spontaneously is known as radioactivity. This is accomplished by an unstable atomic nucleus that want to give up some energy in order to move to a more stable form.
The following formula is used to compute the number of half lives elapsed:
Hence,8 gram of radioactive isotope remains in the sample after 1 half-life.
To learn more about the radioactivity, refer to the link;
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Answer: plasma
Plasma is produced by ionized gas. Movement of charged particles between energy levels produces plasma.
Examples of partially ionized gas are neon signs and lightning flashes.
In March and September both of the hemispheres receive the same amount of energy from the sun. this is because neither end of the axis is tilted toward the sun.
<span>The appearance or quality of light reflected from the surface of a mineral is called luster.
Color refers to the color - it is self-explanatory. Cleavage is where the minerals break.
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