1. DrawtheLewisstructureforammonia, CH​4.​ 2. Draw the Lewis structure for hydrogen sulfide, C​2H​4.​

3. Draw the Lewis structure for phosphorus trifluoride, C​2H​2.​

4. Draw the Lewis structure for carbon dioxide, CH​3O​H.

__ _ _ _ _ is the process of removing earth materials from their original sites through weathering and transport and depositing the in another location. a. erosion b. sedimentation c. lithification d. dissolution

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.