The organic compound di-n-butyl phthalate, c16h22o4(l), is sometimes used as a low-density (1.046 g·ml–1) manometer fluid. compute the pressure (in torr) of a gas that supports a 535-mm column of di-n-butyl phthalate. the density of mercury is 13.53 g·ml–1.

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction

Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved