Answers by Matthew Stopa
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Answers by Matthew Stopa

Answers by Matthew Stopa
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Strontium consists of four isotopes with masses of 84 (abundance 0.50%), 86 (abundance of 9.9%), 87 (abundance of 7.0%), and 88 (abundance of 82.6%). Calculate the atomic mass of strontium.
answered Apr 16, 2019
4 votes
78.6k views
Given the system of equations: 2x – y = –2 x = 14 + 2y What is the value of the system determinant? What is the value of the y−determinant? What is the value of the x−determinant? What is the solution
answered Apr 8, 2019
0 votes
197k views
Which math problem is being modeled on the number line
answered Mar 16, 2019
5 votes
32.9k views
Joaquin goes out for a long walk. He walks 5/12 of a mile and then sits down to take a rest. Then he walks 1/3 of a mile. How far did Joaquin walk altogether?
answered Jan 30, 2019
2 votes
57.8k views
Who brought Buddhism to Japan? A. shoguns B. Europeans C. Koreans D. Chinese
answered Dec 19, 2018
2 votes
98.9k views
Which groups on the periodic table contain metalloids?
answered Oct 10, 2018
2 votes
104k views
The main function of an acropolis was to provide A) housing for wealthy merchants B) land for growing crops that would be used for trade C) protection from attacks D) a central marketplace and public square
answered Sep 17, 2018
4 votes
67.8k views
What is equivalent to the value of the complex number i^2+i^4? A.i^6 B.0 C.-1 D.1
answered Aug 12, 2018
3 votes
131k views
Which sentence describes a cycle of dependency? A.Aid harms the local economy, creating the need for more aid. B.Aid improves infrastructure and creates more wealth and more good infrastructure. C.Aid
answered May 1, 2018
2 votes
159k views
Because of the © symbol in the Web site above, you would not be able to reference the Web site in a paper on bias. True False
answered Apr 17, 2018
2 votes
226k views
Which of the following best explains the current state of the majority of the world’s fisheries? a. they are being sustainably harvested b. they are currently overfished c. they are currently underfished
answered Oct 26, 2017
4 votes
3.6k views
Write out three different search phrases you could use to find information about reality television on the internet.
answered May 19, 2017
6 votes
191k views
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