Net Voltage (V) 0.03 0.02 y = 7.7821x + 0.0005 R² = 0.9939 0.01 0.00 0 0.001 0.002 Sulfate Concentration (M) 0.003

2. Make a graph of the following data points. Is the relationship linear? If so, find the slope and y-intercept. Are the variables directly proportional? voltage (V) 1.0 1.5 2.0 mono 2.5 3.0 3.5 4.0 current (A) 3.45 x 10-³ 5.02 x 10-3 6.88 x 10-3 8.60 x 10-3 1.01 x 10-2 1.22 x 10-2 1.36 x 10-2 Linear? Slope Y-Intercept Directly proportional?

Standard Reduction (Electrode) Potentials at 25 Half-Cell Reaction * (volts) F2(8) + 2 e2F (aq) 287 Ce* (aq) +e Ce (aq) 1.61 Mn0, (aq) + BH'(aq) +5e Mn"( "(aq) + 4 H20(1) 1.51 Cla(g) +2e -2 C (aq) 1.36 Cr20, (aq) + 14 H'(aq) - 6e2 Cr*"(aq) + 7 H20() 1.33 Oz() + 4 H'(aq) + 4e2 H20(1) 1.229 Br20) + 2 e2 Br (aq) 1.08 NO3 (aq) + 4 H'(aq) + 3eNO(g) + 2 H20() Hg"(aq) 0.96 2 Hg (aq) + 2e 0.920 Hg"(aq) + 2 e- Hg(1) 0.855 Ag (aq) +e Ag(s) 0.799 Hg2" (aq) - 2e-2 Hg(1) 0.789 Fe" (aq) +e Fe"(ag) 0.771 12(s) + 2e 21 (aq) 0.535 Fe(CN)"(aq) + e Fe(CN), (aq) 0.48 Cu (aq) + 2eCu(s) 0.337 Cu"(aq) +e- Cu (aq) 0.153 S(s) + 2 H'(aq) + 2 e H2S(aq) 0.14 2H'(aq) + 2e-H2(8) 0.0000 Pb (aq) + 2e- Ph(s) -0126 Sn (aq) + 2 e Sn(s) -014 Ni (aq) + 2 e- Ni(s) -0.25 Co (aq) + 2 e Co(s) -0.28 "(aq) + 2e Cd(s) -0.403 Cr"(aq) +e "(aq) -041 Fe"(aq) + 2 e Fe(s) -044 Cr"(aq) +3e-Cr(s) -0.74 Zn"(aq) +2 e- Zn(s) -0.763 2 H20() +2e Hz(z) + 2 OH (aq) -0.83 Mn"(aq) + 2e - Mn(s) -1.18 A" (aq) + 3e- Al(s) -1.66 Mg (aq) + 2 e- Mg(s)…

Substance AG°F (kJ/mol) FeO(s) -255.2 H2(g) Fe(s) H20(1) Pb(s) -237.2 02(g) H2SO4(aq) PbSO4(s) -744.5 -813.0

Without doing any calculations, match the following thermodynamic properties with their appropriate numerical sign for the following exothermic reaction. 2H2(g) + O2(g)–→2H20(g)

(24) The gold-plating of a ceramic figurine requires a total of 2.78 g of solid gold. If the current being used is 12.7 amperes, how many minutes will it take to plate the gold figurine? You may assume that there is sufficient concentration of gold cation to complete the process. (A) 1.79 (B) 1056 (C) 5.36 VELG 14 (D) 68.1 (E) 4.57 8

The molarity of a solution is determined by four separate titrations or replicates, where the obtained data was 0.4120, 0.4920, 0.3920, and 0.4320 M. Calculate the standard error of the mean for the above data. O 0.00185 O 0.02160 O 0.43200 O 0.04320 O 0.01080

Would this be solved using n=MV??

Given the line notation: Pts) IX* (ag), X2* (aq) I| Y3+ (aq) | Y(s) where: x2+ + e - x+ E° = 0.4 V Y3+ + 3 e → Y E° = -1.84 V P4+ + 4 e → Pt E° = 1.20 V Calculate the EMF.

Pt(s) |X* (aq), X2* (ag) || Y3+ Pt(s) |X' (aq). |x* Given the line notation: (aq) | Y(s) where: x2+ . x* E° = 0.84 V + e - y3+ + 3 e → Y E° = -1.56 V Pt4+ + 4 e → Pt E° = 1.20 V Calculate the EMF.