WILL GIVE BRAINLIEST FOR CORRECT ANSWER! Calculate the molarity of 7.82 g of naphthalene (C10H8) in 85.2 mL of benzene solution.

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

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)

How are isotopes of the same element alike?