Select all statements that are true about molecules. (there may be more than one correct answer, select all that apply)

a. very rare in nature
b. two or more atoms of one or more elements that are linked by shared electrons
c. pure substance
d. can be found in elements and compounds

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

List the path of the respiratory system

What is a difference between a mixture of elements and a mixture of compounds