An object gains 10 joules of potential energy as it is lifted vertically 2.0 m. If a second object with one-half the mass is lifted vertically 2.0m, the potential energy gained by the second object will be a. 10j
b. 20j
c. 5.0j
d. 2.5j

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

What shape would a molecule with two bound groups and two lone pairs have?

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