Which is composed of aromatic hydrocarbons? clothing
barbeque fuel
pain relievers
polyvinyl chloride

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

What is the polyatamic ion of borate