An alpha particle has a mass number of 2.
a. true
b. false

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Acontrol during an experiment. might change remains constant does not exist does change

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.