Ions in a certain volume of 0.20 M NaCl(aq) are represented in the box above on the left. In the box above on the right, draw a particulate diagram that represents the ions in the same volume of 0.10 M CaCl2(aq)?

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)