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  • Which of the following statements is true with regard to hydrogen? i. Hydrogen reacts to attain a duplet of electrons in its K shell. ii. Hydrogen always forms a single covalent bond. iii. Hydrogen can form a single and a double covalent bond.
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  • Which of the following compounds of carbon does not consist of ions?
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  • Which of the following structures correctly represents the electron dot structure of a chlorine molecule?
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  • What are the percent composition for SF2?
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  • What is the percent composition of Ethyne? C2H2?
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  • What is the percentage of Sulfur in SF2?
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  • Boiling point of compounds decrease as hydrocarbon chain length gets longer.
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  • Volatile fractions with low boiling point are difficult to ignite.
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  • A hydrocarbon C4H10 has a boiling point of 0°C. Another hydrocarbon C6H14 has a boiling point of 69°C. What would you expect the boiling point of C8H18 to be?  
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  • Be sure the saw blade is_____________, has proper clearance, and is free from vibration the same brand as the saw
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  • Always be sure your work is held firmly against the____________________ .
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  • If the material is bowed, twisted, or warped____________________________, .
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