a 25.0 ml sample of 0.150 m benzoic acid is titrated with a 0.150 m naoh solution. What is the pH before any base is added

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?