Arubber balloon was filled with helium at 25.0˚c and placed in a beaker of liquid nitrogen at -196.0˚c. the volume of the cold helium was 15.6 cm3. assuming ideal gas behavior and isobaric conditions, what was the volume of the helium at 25.0˚c?

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.