Axit H2 SO4 đặc ,nóng tác dụng với Fe2 O3 tạo ra sản phẩm là . A. Fe2(SO4)3 và H2O
B. SO2 vàFe2(SO4)3
C. Fe2(SO4)3,SO2và H2O
D. Fe2(SO4)3

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

Can someone me with 6 to 10 plz this is for masteries test.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next