Who reported four “element” classifications, but included some substances that were combinations of elements rather than true elements in his listing? Henry Moseley
Dmitri Mendeleev
Antoine Lavoisier
Johann Dobereiner

Which is mostly likely why many scientists reject the cold fusion theory

What is the oxidation state of each individual carbon atom in c2o42−?

Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive