Answer: Ionic bonds usually occur between metal and nonmetal ions. For example, sodium (Na), a metal, and chloride (Cl), a nonmetal, form an ionic bond to make NaCl. In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals.
Explanation:
My Answer:
Because the closing of the Purine ring is used to conserve energy all throughout. Purine biosynthesis is a process used to destroy and break down waste without wasting as much energy as some other biological processes.

Answer: The molarity of the solution is 2.00 M
Explanation:
Molarity is defined as the number of moles of solute dissolved per liter of the solution.

where,
n = moles of solute
= volume of solution in L = 1.00 L
moles of solute =

Thus the molarity of the solution is 2.00 M