Final Review Problems - Use the electron-pair repulsion...

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Use the electron-pair repulsion model to predict the molecular geometry of the following molecules: a. GeCl 2 b. AsCl 3 c. SO 3 d. XeO 4 Predict the electron gr. geometry, molecular geometry and bond angles of the following: a. HOF b. NH 4 + c. PF5 d. ClF 4 + What hybrid orbitals would be expected for the central atom in PBr3? What hybrid orbitals would be expected for the central atom in GeCl4? Use molecular orbital theory to describe the bonding of the following; find the bond order and decide whether it is stable. Is the substance diamagnetic or paramagnetic? C 2 + Use molecular orbital theory to describe the bonding of the following: find the bond order and decide whether it is stable. Is the substance diamagnetic or paramagnetic? Ne 2 Use molecular orbital theory to describe the bonding of the following: find the bond order and decide whether it is stable. Is the substance diamagnetic or paramagnetic? C 2 - What hybrid orbitals would be expected for the central atom in each of the following? a. PCl5 b. SeF6 What hybrid orbitals would be expected for the central atom in each of the following? a. TeF4 b. IF 4 - Iron wire weighing 5.6g is placed in a beaker covered with 15.0g of dilute Hydrochloric Acid. Hydrogen gas is produced by the reaction. After the reaction, the contents of the beaker weighs 20.4g. What is the mass of hydrogen gas produced by the reaction? Give the normal state (solid, liquid, or gas) of each of the following: a) cream of tartar; b) oxygen; c) diamond; d) bromine For each of the following, decide whether a physical or chemical change is involved: a) dissolving of sugar in water; b) rusting of iron; c) burning of wood; d) evaporation of alcohol All of the following processes involve a separation of either a mixture into substances or a compound into elements. For each of the following, decide whether a physical or chemical change is involved: a) Sodium metal is obtained from sodium chloride; b) Iron filings are separated from sand by using a magnet; c) Sugar crystals are separated from sugar syrup by evaporation of water;
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d) Fine crystals of silver chloride are separated from a suspension of the crystals in water Indicate whether each of the following materials is a substance, a heterogeneous mixture, or a solution: a) milk; b) gasoline; c) bromine; d) aluminum Which of the following are pure substances and which are mixtures? For each, list all of the different phases present. a) a sugar solution with sugar crystals at the bottom; b) ink containing a liquid solution with fine particles of carbon; c) a sand containing quartz (silicon dioxide) and calcite (carbon carbonate); d) liquid water and steam at 100 ° C Using scientific notation , convert: a) 6.20 km to m; b) 2.54 cm to m; c) 1.98 ns to s; d) 5.23 ug to g. A flask contains 25.0 ml of diethyl ether weighing 17.84g.
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Final Review Problems - Use the electron-pair repulsion...

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