The ranges of thermal mass flow meters for gases are specified in such units as ln/min, sccm or m3n/h. These units look like volumetric units, but in truth they are expressions of Mass Flow. What is the story behind this?
exists and is an alternate of. Merge this question into. Split and merge into it. Answered by The Community. Making the world better, one answer at a time. PbS is not an element, it is a compound. Pb is lead and S is sulfur. The name of this compound is commonly known as Lead Sulfide.xists and is an alternate of. Merge this question into. Split and merge into it. Answered by The Community. Making the world better, one answer at a time. PbS is not an element, it is a compound. Pb is lead and S is sulfur. The name of this compound is commonly known as Lead Sulfide.
Pb(OH)4   Hydroxide ion has a charge of -1. Since the lead has a charge of +4, you need four hydroxide ions to keep the compound stable.