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Answers by Pkm

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If you start with 5 molecules of O2 in the reaction 2Mg+O2--> 2MgO, how much Mg will you need? a. 4 c. 8 b. 5 d. 10
answered Jan 11, 2018
3 votes
124k views
Robin can mow a lawn in 3 hours, while Brady can mow the same lawn in 4 hours. How many hours would it take for them to mow the lawn together? seven twelfths twelve sevenths 7 12
answered Sep 1, 2017
1 vote
56.0k views
Why did the salem witch trials happened?
answered Jun 14, 2017
3 votes
146k views
Neutralization reactions typically occur between a strong acid and a strong base to produce what?
answered Mar 31, 2017
0 votes
4.3k views
What questions did the Supreme Court evaluate in McCulloch v. Maryland?
answered Mar 2, 2017
4 votes
177k views
Quadratic formula 2x²+9x-4=0
answered May 18, 2015
3 votes
55.9k views
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