Answer:
Explanation:
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One important measure of the rate at which a radioactive substance decays is called half-life, or t1/2. Half-life is the amount of time needed for one half of a given quantity of a substance to decay. Half-lives as short as 10–6 second and as long as 109 years are common.
True because if anything is moving it is in motion. And because horizontal is similar to projectile!
B .pure water it’s made up of oxygen and hydrogen “H2O”
Answer:
Branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.
Explanation:
It is the heat required to change a gram of substance from a liquid to a gas.
