a] MnO41- b] HNO3 dj Ha01 c] NH3 el SO3 f BrO41- h] NasOa g] CH4 i] NH41 jl HCIO4 _k] KAI(SO4)2 J NO31 m] N2 n] Ca(OH)2 o] Co(FO)2 P] PCI3 2. Determine which of the following reactions are "redox" reactions. Circle the "letter" of only those that represent red ox reactions. 2 H20 2 Cu(NO3)2 a. Cu + 4 HNO3 2 NO2 b. Zn + 2 H1 Zn2+ H2 BaCl2 + H2SO4 = 2 HCI + BaSO4 С. H1+ Br1 HBr d. 2 FeCl3 2 Fe +3 Cl2 e. f. AgNO3 + HCI AgCI + HNO3 g. 2 NaOH + H2SO4 2 HOH Na2SO4 h. 2 H2 + O2 2 H20 195

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.