If a chemist has a stock solution of BF3 that is 8.5 M, how would she use it to make 325 ml of 2.0 M BF3

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

In a ball-and-stick molecular model, what do the sticks represent?

Which statement best describes isomers? a. isomers are alcohols that have the same functional group. b. isomers have at least one carbon-carbon double bond. c. isomers have the same molecular formula but different structural properties.