Answer:
A. standing in line to pay for groceries.
Explanation:
Just standing there is not doing work, All of the other options are examples of work.
Answer:
liquids: water and soda
gases: oxygen and carbon dioxide
solid: a chair and a notebook
The source of alpha particles in a smoke detector is the Americium.
Answer: A molecule of hydrochloric acid, for example, is composed of a hydrogen atom and a chlorine atom. When these molecules dissolve into water, they separate into a positively charged hydrogen ion and a negatively charged chlorine ion. ... Only some of the molecules of weak acids disassociate when added to water.
Explanation:
