What is the percent composition of Br in CuBr3?

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

Select the correct answer. why are scientific models important in the study of science? a. they always involve critical mathematical calculations. b. they scientists understand complex ideas and objects that aren’t easy to handle. c. they enable scientists to popularize their work in society. d. they are required when conducting any peer review process. e. they are necessary for turning a hypothesis into a law.

D5w is shorthand for a 5% glucose rehydration fluid used in ivs. the doctor orders 1200 ml d5w@ 30 gtts/min. you have an iv tube that delivers 18 gtts/cc. how many hours will it take for the 1200 cc bottle to infuse?