The plasma membrane<span> is the boundary between the cell and its environment. It regulates what enters and exits the cell. Cells must maintain an appropriate amount of molecules to </span>function<span> inside them. They must also have a way to keep things out or to allow things to enter.</span>
Formula M1V1 =M2V2
1.5 * 100 = M2 *300
M2 = 1.5*100/300= 0.5.
Answer: the molarity is 0.5M.
Then I would guess the answer is D because Na2OH is much more common and stable than Na2O is <span />
The best and most correct answer among the choices provided by the question is the first choice "carbon has many allotropes"
Organic compound, any of a large class of chemical compounds in which one or more atoms of carbon<span> are covalently linked to atoms of other elements, most commonly </span>hydrogen<span>, </span>oxygen<span>, or </span>nitrogen. The few carbon-containing compounds not classified as organic include carbides, carbonates, and cyanides<span>.
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I hope my answer has come to your help. God bless and have a nice day ahead!
