Can a physical change, change what a substance is? Explain your answer by giving an example.

Yes it can change what a substance for example melting wood can change from physical to chemical real quick

The biosphere of the earth is made up of what compound? organic or inorganic?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)