Part G Interactive 3D display mode H3C CH3 Br

2. 100 12 133 134 1 0 С6H8O 4000 9 HSP-45-691 8 3000 1 : 7 1 T 6 2000 5 ppm NAVENUMBERI : 4 T 3 1500 4:2 T 2 T T 1 wwwm 1000 0 500 DEPT-90 DEPT-135 - 200 180 160 140 120 COS-11-743 لد 100 ppm 80 60 40 20 m 0

Much of Earth's history can be unraveled studying sulfur. Sulfur can be used as "geothermometer". The ratios of stable sulfur isotopes change with the temperature of Earth's processes. For example, igneous systems deep inside the Earth occur at very high temperatures, hydrothermal systems occur at intermediate conditions, and sedimentary rock weathering occurs at low temperatures. The composition of stable sulfur isotopes varies across the 1000 degree temperature range. 10. How many peaks would be seen in the mass spectra for such a study? Make a basic sketch (bar chart) a.m.u. vs % natural abundance and label each peak's a.m.u. and % natural abundance.

Predict all the chemical compounds in the table below from the given chemical formula and other physical properties   Chemical Name Chemical Formula M (g/mol) Boiling Point Melting Point Refractive Index (power of n to D) (nD)     C6H14 86.18 69   1.375     SiO2 60.1   1600-1725       C13H10 166.22 295         C13H8O 180.19 342   1.6309     C3H6O 58.08 57   1.35900

1) SOCI₂, Et3N OH 2) + AICI 3

CH3 Brz _Z1g + उ

Please choose an appropriate technique(s) to separate following compounds (it can be one, more than one, on none): Compound Melting Point Density Boiling Point Molar mass Phenol 40.5°C 1.07 g/cm 181.7°C 94.113 g/mol Toluene -95 °C 0.87 g/mL 111 °C 92.141 g/mol Simple Filtration Column Chromatography Distilation Crystallization/Re-Crystallization Separatory funnel None www. MacBook Air

11. A material safety data sheet (MSDS) for a chemical is shown below. MSDS H3PO4(aq) Section 9: Physical and Chemical Properties Physical state and appearance: Viscous liquid Odor: Odorless Color: Clear, colorless Boiling point: 158°C Melting point: 21°C Specific gravity: 1.685 at 25°C Which of these is the appropriate name for H3PO4 (aq)? A. Trihydrogen phosphite B. Phosphoric acid C. Phosphorous hydroxide D. Phosphorous acid

2. Explain how suction filtration is carried out in the laboratory. Give the important points that must be observed in doing the process.

Br [A] fins [B] Br [C] 17. Discuss the relationship between Compounds A, B and C. Then draw a diagram to show what you would expect to see on a TLC plate if you compared the three compounds on the same plate. 120m 9m