Beginning with commercial grade hydrochloric acid, 1.00 x 102 ml of a 12.4 m hcl is added to water to bring the total volume of the solution to 0.820l. what is the concentration of this new solution?

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

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