Answer: Notice that mercury(II) oxide decomposes to form liquid mercury and oxygen gas in a 2:1 mole ratios. This means that when 2 moles of ...
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1.0 L at STP Explanation: Start by writing the balanced chemical equation that describes t
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1837 electrons.
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1837 electrons have the same mass as 1 proton.
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When Moseley arranged the elements in the periodic table by their number of protons rather than their atomic weights, the flaws in the periodic table that had been making scientists uncomfortable for decades simply disappeared.
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Explanation:
A scientific investigation typically begins with observations. Observations often lead to questions. A hypothesis is a possible logical answer to a scientific question, based on scientific knowledge. A prediction is a statement that tells what will happen under certain conditions