Achemist adds 395.0 ml of a 1.4m sodium chloride (naci) solution to a reaction flask. calculate the mass in grams of sodium chloride the chemist has added to the flask. round your answer to 2 significant digits. 10

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.