<span>The answer is "D" where the number of collisions per unit area is reduced by one-half. Drawing back on the piston means the volume is increased. The pressure is reduced. There are fewer collisions when the pressure is reduced.</span>
Answer:
Cholesterol is a fat used by the body that is produced by the body and that also comes from animal-based foods. Important numbers to know are total cholesterol, HDL or good cholesterol, LDL or bad cholesterol, and triglycerides.
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Answer:
Its C how contributions by many different cultures throughout history have advanced our understanding of the solar system.
Explanation:
The average atomic mass of the element is the weighted average atomic mass of element with respect to the natural abundance of all the isotopes.
isotopes are atoms of the same elements with different mass numbers , in other words same number of protons but different numbers of neutrons.
to find the average atomic mass we need to know the atomic masses of all the isotopes in addition to the natural abundance percentages of the isotopes.
answer is we need to know the atomic masses of the isotopes as well
