(B) Calculate the Madelung Constant for a negative ion in a 2-dimensional Hexagonal lattice (shown below) with alternating positive and negative ions for the first 3 nearest neighbors (expand and repeat atom positions as shown in blue and red hexagonal lattice figure)

4.05 kg + 567.95 g + 100.1 g

Every year Every second (1 year 365 days).

Cl₂(g) + 2e Cr₂0 (aq) + 14 H(aq) + 6€¯ O2(g) +4 H(aq) + 4e¯ MnO2(s) + 4H(aq) + 2e¯ 10, (aq) +6H(aq) +5e¯ VO₂+ (aq) + 2H(aq) + e¯ Br₂(1) + 2e NO, (aq) +4 H(aq) + 3e¯ ClO2(g) + e 2 Cl(aq) Ag* (aq) + e Fe3+(aq) + e 2 Cr³+ (aq) + 7 H₂O(1) 1.36 1.33 2 H₂O(1) 1.23 Mn2+(aq) + 2 H₂O(1) 1.21 12(aq) + 3H2O(l) 1.20 VO²+(aq) + H₂O(1) 1.00 2 Br (aq) 1.09 NO(s) + 2 H2O(1) 0.96 CIO₂ (aq) 0.95 Ag(s) 0.80 Fe2+(aq) 0.77 What is the E° cell for the reaction Cr₂O²² + CIO₂ → Cr³+ + CIO₂? a. 2.28 V. b. -2.28 V. c. 0.38 V. d. -0.38 V.

11. Billy is running away from a Wells Fargo bank at a speed of 13 kilometers per hour (units are km/h). If the distance between the bank and the border to Mexico is 1.9 km, will he be able to get there before the cops arrive in 9 minutes? How long will it take for him to reach the border? (Hint: speed = distance / time, 1 hour = 60 minutes)

A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of glycerol, carbon tetrachloride, pentane, tetrahydrofuran, and acetone. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density glycerol -3 1.3 g-cm - 3 1.6 g cm carbon tetrachloride -3 0.63 g·cm pentane tetrahydrofuran -3 0.89 g·cm -3 0.79 g·cm acetone Next, the chemist measures the volume of the unknown liquid as 0.786 L and the mass of the unknown liquid as 991. g. Calculate the density of the liquid. Round your g. cm answer to 3 significant digits. yes Given the data above, is it possible to identify the liquid? no glycerol carbon tetrachloride pentane If it is possible to identify the liquid, do so. tetrahydrofuran acetone

Mn04 (aq) + SH"(aq) + 5e → Mn2"(aq) + 4H201) Cry0,2 (ag) + 6e → 2Cr*(aq) + 7H2O0) Cu2" +1.51 V +1.33 V *(aq)+2e Cu(s) (aq) + 2e Pb(s) (aq) + 2e→ Fe(s) +0.34 V -0.13 V Fe2+ Al3*(aq) + 3e → AI(3) -0.44 V -1.66 V Refer to Exhibit 17-1. Determine E cell for the electrochemical cell designated by the cell notation below. Al(3) | Al3* (ag) || Cu2*(aq) | Cu(s) O a. +12.0 V O b.+5.66 V Oc.-2.00 V O d.-1.32 V O e. +2.00 V

11. Convert 3,333 km³ into mi³.

what is the average time of these 4 times? 2:min 46sec 2min 52sec 3min 37sec 3min 54sec

Please answer both questions?