Oblicz ile tlenu może powstać w roślinie w wyniku pochłonięcia 4,4 ton tlenku węgla (IV) przy wystarczającym dostępie wody?
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Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Calculate the number of molecules present in 0.750 mol of mgo.

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.