3. The smallest unit of matter of a substance that rotains all the physical and chemical properties of that substance; consists of a single atom or a group of atoms bonded together

b i think it’s a water wheel turning in a stream

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

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