Jan 15th, 2015
Price: $15 USD

Question description

1.Element Q has three isotopes. The first has a mass of 34.8636 amu and makes up 39.2 % of a    standard sample. The second isotope has a mass of 36.5076 amu and makes up 43 % of a standard sample. The third isotope has a mass of 38.1639 amu and makes up the remainder of a standard sample. What is the average atomic mass of this element?

2.  You want to do an experiment using 47Ca (half-life=4.53 days). You will need 3.95 μg of the nuclide. What mass of CaCO3 (100% enriched in 47Ca) must you order if it will take 37 hours to be delivered to you from the nuclear facility where it is prepared?

3.A living plant contains approximately the same isotopic abundance of 14C as does atmospheric carbon dioxide. The observed rate of decay of 14C from a living plant is 15.3 disintegrations per minute per gram of carbon. How many disintegrations per minute per gram of carbon will be measured from a 17000-year-old sample? (The half-life of 14C is 5730 years.)

Tutor Answer

(Top Tutor) Daniel C.
School: UT Austin

Studypool has helped 1,244,100 students

Review from our student for this Answer

Jan 26th, 2015
"Solid work, thanks. "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1827 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors