CHEM 1A Midterm: Midterm 1 Form a key

• School: UC-Irvine
• Department: Chemistry
• Course: CHEM 1A
• Professor: All

Document Summary

Chemistry 1a, section c, course code 40030, professor: r. m. Instructions: using a #2 pencil, enter the correct answer to each question on the scantron sheet pro- vided. Use the blank spaces on this this exam, and the back, for your calculations. Please turn in both the exam and the scantron. A periodic table and scratch sheet is found at the end of the examination. 88 ra: 226, 108, 138, 88, this atom has no neutrons, the mass spectrum shown above for an element shows two mass peaks. Calculate h in joules for v = 2. 41 104 m/s and = 4. 9 10 19 j: 2. 64 10 22 j, 4. 903 10 19 j, 4. 90 10 19 j, 4. 9 10 19 j, none of the above. Page 2: shown above is part of the atomic emission spectrum for the h atom. Called the lyman series, this is the highest energy series of emission lines in that spectrum.