The pH of a solution is 2.0. Which statement is correct? Useful formulas include , , , and .

V1t2 = v2t1 is an expression of who’s law

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together