Find the number of atoms of each element.
Ca(OH2)3
Ca:
0:
H:
please!!!

Explanation:

Calcium Hydroxide has three atoms 5 atoms in each molecule.

One calcium atom

Two oxygen atoms

Two hydrogen atoms

So total 5NA. present in NA molecules

b

is correct hope this   also i learnd this in middle school

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."