Need help on queston 4 and 5
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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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Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.
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Identify and describe the three ways that mutations affect organisms.
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How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?
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