10. Identifying Redox Reactions using Oxidation Numbers a) H2SO4 + Ca(OH)2 → CaSO4 + 2H2O

b) 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s)

c) C3H3(g) + 5 O2(g) → 3 CO2(g) + 4H2O(g)

d) CO2(g) + H2O(0) → H2CO3(aq)

e) Cr2O72- + C2H5OH → 2 Cr3+ + 3 CH3COOH + H20

f) 2 H2O2 (1) ► 2 H20 (g) + O2(g)

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.