Chemistry, 06.07.2019 10:00 rabion8789
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Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge
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What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?
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In which situation can a mixture always be called a solution
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The atomic number is determined only by the number of in the nucleus of an atom. but, in a neutral...
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