Why is carbon so abundant in living things when oxygen is the most abundant element on earth?
a. carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures.
b. carbon atoms are found in compounds that are solids at room temperature whereas oxygen atoms are found in compounds that form gases
c. carbon atoms have lower mass than oxygen atoms, which keeps the masses of living things within desirable limits.
d. carbon atoms are more stable than oxygen atoms, which allows living things to have more stable compositions.

I think the correct answer from the choices listed above is option A.Carbon is so abundant in living things when oxygen is the most abundant element on Earth because carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures.

Answer the molar mass of magnesium is 24.305g/mol.

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.