Pirita (FeS2) serveste ca materie prima pentru obtinerea acidului sulfuric. Calculeaza ce cantitate de pirita este necesara pentru a obtine acid sulfuric cu cantitatea : a) 10 mol b) 490g . Conform schemei: FeS2 ->SO2 -> SO3 -> H2SO4

The three types is stress that act on earths rocks are compression, tension, and

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.

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