Chem Midterm - 3:39 PM Blackboard Learning System Page 1 of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 5/9/10 3:39 PM Blackboard Learning System Page 1 of 12 https://learn.uh.edu/webct/urw/lc5122011.tp0/cobaltMainFrame.dowebct View Attempt 1 of 1 Title: Final_Exam Started: May 7, 2010 11:01 AM Submitted: May 7, 2010 12:55 PM Time spent: 01:54:11 Total score: 28/34 = 82.3529% Total score adjusted by 0.0 Maximum possible score: 34 Done 1. A compound of a transition metal and iodine is 65.4% metal by mass.How many grams of the metal can be obtained from 600g of thiscompound? Do not include units with your answer. Student Response Correct Answer Answer: 392.4 392 Score: 1/1 2. Naturally occurring argon consists of three isotopes, the atoms of which occur in the following abundances: 0.34% 36 Ar (35.9676 amu), 0.07% 38 Ar (37.9627 amu), and 99.59% 40 Ar (39.9624 amu). The calculated atomic weight of argon is: Student Response Correct Answer A. 39.95 amu B. 37.96 amu C. 38.96 amu D. 39.64 amu E. none of the above Score: 1/1 3. How many neutrons are there in the nucleus of 108 Ag? Student Response Correct Answer A. 54 B. 108 Your location: Home Page › Exams › Final_Exam › Assessments › View All Submissions › View Attempt 5/9/10 3:39 PM Blackboard Learning System Page 2 of 12 https://learn.uh.edu/webct/urw/lc5122011.tp0/cobaltMainFrame.dowebct C. 47 D. 61 E. 18 Score: 1/1 4. The formula of the stable ionic compound containing only sulfur and magnesium is Student Response Correct Answer A. Mg 2 S B. MgS 2 C. MgS D. Mg 2 S 3 E. Mg 3 S 2 Score: 1/1 5. Give the systematic names for the formulas, or the formulas for the names: a) Na 2 HPO 4 ; b) potassium carbonate dihydrate; c) NaNO 2 Student Response Correct Answer A. sodium dihydrogen phosphate K 2 CO 3 .•2H 2 O sodium dinitrogen monoxide B. sodium hydrogen phosphate K 2 CO 3 •.2H 2 O sodium nitrite C. sodium hydrogen phosphite K 2 CO 3 .•2H 2 O sodium nitrite D. disodium hydrogen phosphate K 2 CO 3 •.2H 2 O sodium nitrate E. disodium hydrogen phosphate K 2 CO 3 .•2H 2 O sodium nitrite Score: 1/1 5/9/10 3:39 PM Blackboard Learning System Page 3 of 12 https://learn.uh.edu/webct/urw/lc5122011.tp0/cobaltMainFrame.dowebct 6. A metal oxide with the formula M 2 O contains 11.18% oxygen by mass. In the box below, type the symbol for the element represented by M....
View Full Document

{[ snackBarMessage ]}

Page1 / 12

Chem Midterm - 3:39 PM Blackboard Learning System Page 1 of...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online