CHEM110 F18 - PRACTICE QUIZ #3 (Chapter 2 Petrucci) Blank (1).docx

CHEM110 F18 - PRACTICE QUIZ #3 (Chapter 2 Petrucci) Blank (1).docx

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CHEM101 F16 – QUIZ #2 NAME: ______________________ SCORE: __________ / 30 1.Choose the INCORRECT statement from those given below. 2. Match the type of subatomic particle with the appropriate charge. Circle the particle(s) present in the nucleus of an atom. ________ electron A. +2 B. +1 ________ neutron C. 0 D. -1 ________ proton E. -2 3.A 0.920-gram sample of magnesium is allowed to burn in 0.321 g of oxygen gas. The sole product is magnesium oxide. After the reaction, no oxygen remains and 0.809 g of magnesium oxide has been formed. What mass of magnesium is left unreacted? 4.A cation has 13 neutrons and 10 electrons. If it has a charge of +1, what is its correct symbol? 13 + Na 11 24 + Na 11 26 + Al 13 23 + Ne 10 13 + Na 10 5.Copper occurs in an isotopic mixture of 69.09% 63Cu (mass = 62.93 u per atom) and 30.91% 65 Cu (mass = 64.93 u per atom). What is the average atomic mass of copper?
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