9. Find the Oxidation number for each element in the compound Al2(PO4)3 Al: P: O: Na2S2O3 Na: S: 0:

essibility 12 + B I U A Q Search 1 1. Cobalt System (watch video) [Co(H,O)]*(aq) + 4CI Pink Stress None (CONTROL) Addition of H₂O Addition of HCI Add heat 1 Remove heat Addition of =-=-=-=-33 X 2 = NaCl Initial Color: Observations (Color Change?) L (aq) 31 + heat → [COCI]² (aq) + 6H₂O(1) KE Blue Notes: Sodium ions react with chloride ions to form the insoluble precipitate Table options Explain using Le Chatelier's Principle

Draw the structure corresponding to the following name: (3S,6R)-6-(2,4-dinitrophenyl)-3-amino-1-heptyne   Please show all work! If no work is shown then it will result in a zero

The GRASP METHOD - Gr13

Pls show work, will rate! A,B,C

2. Use the following reactions and AH° data to determine AH° for (- Ca(s) + 2 H20(1) → Ca²*(aq)+2 OH-(aq) +H2(g). Known reactions: H*(aq) + OH- (aq) → H2O(1) 0.0 ΔΗ - 55.9 kJ Ca(s) + 2H*(aq) → Ca²*(aq) + H2(g) AH° = – 543.0 kJ

A Н Н H3C H H Н B CH₁ Lit cu H Br C A Et₂O + ?? 0°C BrMg. В СО BrMg. HH Н.С 2 с CH₂ BrMg. D

Ch3 interconverting