Exam 1 (Spring 2010)

Exam 1 (Spring 2010) - View Attempt Page 1 of 7...

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Unformatted text preview: View Attempt Page 1 of 7 < Your location; Home Page > Exams > Mjflterm_Ex_am_ 1 > Agggigmjintg > V|ew ; All..SubmJssjoni > View Attempt View Attempt 1 of 1 Title: Midterm_Exam_l Started: February 23, 2010 5:34 PM Submitted: February 23, 2010 6:48 PM Time spent: 01:14:07 Total score: 49EMSH&> T o ta l score adjusted by 0.0 Maximum possible score: 20 If 200.0 g of magnesium oxide contains 79.4 g of oxygen, what mass of magnesium in q is contained in 7.624 kg of magnesium oxide? Do not write units with your answer. Student Response Correct Answer Answer: 302 4,597 Score: 0/1 .-< i. Enter the symbol of the element in the set below that is a nonmetal. For example, H is the symbol of the nonmetal hydrogen. gold, bromine, lead Student Response Correct Answer 1. Br Equals Br (100%) Score: 1/1 A hypothetical element, Q, has two stable isotopes, 31 Q (isotopic mass = 30.91 amu) and 35 Q (isotopic mass = 34.98 amu). If the atomic mass of Q in the periodic table is 32.12 amu, what is the percent abundance of 35 Q? Do not enter units with your answer. Student Response Correct Answer I Answer: 23.74 29.73 Score: 0/1 Which of these ions is/are NOT commonly found in stable ionic compounds? *^V. O" 1 " * ' a) Ba 2 ~ b) C 4+ c) S 2 ' d) AI 3+ e) Rb 2+ https://learn.uh.edu/webct/urwAcll33649197021.tpll33649217021/Vie\vStudentAttempt.... 2/28/2010 View Attempt Page 2 of 7 Student Response A. a), b) B. b), e) C. a), e) . D. a), b), e) E. d), e) Comet Answer S Score: 1/1 What is the formula of dichlorine heptaoxide? Enter your answer with atomic symbols and numbers, such as A2B3, without any spaces. Do not include the number "1" in any formula.numbers, such as A2B3, without any spaces....
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This note was uploaded on 01/24/2011 for the course CHEM 11121 taught by Professor Geanangel during the Spring '09 term at University of Houston.

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Exam 1 (Spring 2010) - View Attempt Page 1 of 7...

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