How many nitrogen atoms are there in 3 molecules of N2H4

two nitrogen atoms

Explanation:

Hydrazine is a derivative of ammonia, and it has two nitrogen atoms and four hydrogen atoms as opposed to ammnia's one nitrogen and three hydrogens.

hope it helps (^^)

# Cary on learning

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.