A system is a group of parts that can be
considered one unit. Storm systems, ecosystems,
and our bodies are natural systems. Cars and
houses are human-made systems.
Choose an example of a system, and analyze the
energy flow through the system. Describe in detail
how energy enters the system, how energy
changes form while in the system, and how
energy leaves the system.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;