Assume that producing 1 unit of calcium requires 0.2 units of calcium, 0.7 units of hydrogen, and 0.5 units of sea salt; that producing 1 unit of hydrogen requires 0 units of calcium, 0.2 units of hydrogen, and 0.4 units of sea salt; and that producing 1 unit of sea salt requires 0.4 units of calcium, 0.5 units of hydrogen, and 0.3 units of sea salt. Find the production schedule that satisfies an external demand for 58 units of calcium, 28 units of hydrogen, and 10 units of sea salt. X=

Bond Bond Energy (kJ/mol) Bond Bond Energy (kJ/mol) C-C 347 C=O (in CO2) 799 C=C 614 C=O 745 C≡C 839 C≡O 1070 C-H 413 O=O 498 O-H 467 N-H 391 H-H 432 N≡N 945 C-O 358 N-Cl 200 C-N 305 N-O 201 C-Cl 339 C≡N 891 Estimate ΔHrxn for the following reaction: C2H4+H2→C2H6 Give your answer in kJ per mole.

10. A container is separated into two halves by a membrane. Your lab partner assistant, Thurmond, is supposed to place a MgCl2 solution on side 1 and a NaCl solution on side 2. He is then supposed to measure the rate of water movement across the membrane. Unfortunately, Thurmond is not very good about keeping complete lab notes and he has forgotten to write down some data and calculations. Using your knowledge of osmosis, complete the following table. Temperature is 15°C and the hydraulic conductivity for the membrane is 0.4 ml/atm sec. MgCl2 Concentration on Side 1 NaCl Concentration on Side 2 80 mM Osmolarity on Side 1 Osmolarity on Side 2 Difference in osmotic pressure 60 mosM across the membrane Jy 0.95 ml/sec Reflection coefficient (ơ) Direction of water movement

A voltaic cell is constructed from a standard Hg2+|Hg half cell (E°red = 0.855V) and a standard Cl2|Cl- half cell (E°red = 1.360V).