Chemistry 1A - Pines - Midterm 1 Sample B

Chemistry 1A - Pines - Midterm 1 Sample B - 1.) In the...

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1.) In the combustion of butane (C4H10) in excess O2 to give CO2 and H2O, how many moles of CO2 are formed from each mole of butane? A) 1 B) 2 C) 3 D) 4 E) 5 2.) If 1 mole of glucose (C 6 H 12 O 6 ) reacts with 1 mole of O 2 , according to the reaction below, C 6 H 12 O 6 +6 O 2 6 CO 2 H 2 O which is the limiting reagent in the reaction? A) C 6 H 12 O 6 B) O 2 C) CO 2 D) H 2 O E) none of these 3.) Which of the following compounds exhibit ionic bonding? Mark all that apply. A) Cl 2 B) CO 2 C) CH 4 D) E) MgBr 2 4.) 6.) Which of the following must be the same before and after a chemical reaction? Mark all that apply. A) The total mass. B) The total pressure. C) The total number of molecules. D) The total number of moles. 5.) Which of the following contains the most molecules ? A) 5.0 g CO 2 B) 5.0 g O 3 C) 5.0 g H 2 O D) 5.0 g CO E) 5.0 g Xe 6.) Which difluoropropane (C 3 H 6 F 2 ) molecule is chiral? (note: the H atoms are not shown) A.) CCC F F B.) FF C. ) D.) F F 7.) 10) Which of the following compounds contains at least one purely covalent bond ( 0 % ionic character)?
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Chemistry 1A - Pines - Midterm 1 Sample B - 1.) In the...

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