Noke Lew weighs out 50.0 g of sodium chloride (NaCl) salt. She adds 300.0 g of water, so her total solution mass equals the salt plus the water together. Calculate the percent by mass of NaCl in her solution. Answer to 3 significant figures with appropriate units.

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.