Chapter 123 practice

Chapter 123 practice - Practice for EXAM I 1. Using the...

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Practice for EXAM I 1. Using the conversion sheet, perform the following conversions: (10pts) a. 245ml to L b. 4.8 x 10 -3 m to in c. 3.00 x 10 -8 m/s to Km /hr d. 1.10 g/ml to lbs/L e. 4.0 × 10 −10 m to nm 2. Explain the difference between a chemical and a physical change in matter. Give one example of each. (6pts) 3. Tell the number of protons neutrons and electrons in the following atoms: (4pts) a. Carbon -13 b. The most stable ion of chlorine with a mass number of 37?
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4. Label the metal and nonmetals in the following collections of atoms: (5pts) a. Nitrogen b. Argon c. Lithium d. Iron e. Zinc 5. Explain the significance of a “balanced chemical reaction.” (5pts) 6. Calculate the number of oxygen atoms in 45.8g of Ammonium Nitrate, NH 4 NO 3 . (5pts) 7. What is the mass in grams of 1.000 mol of glucose, C 6 H 12 O 6 ? (5pts)
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Hydrofluoric acid, HF(aq), cannot be stored in glass bottles because compounds called silicates in the glass are attacked by the HF(aq). Sodium silicate (Na
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This note was uploaded on 09/08/2010 for the course CHEMISTRY 151 taught by Professor Wikrent,pollyanna during the Spring '10 term at Pima CC.

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Chapter 123 practice - Practice for EXAM I 1. Using the...

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