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There are several reasons; the first is that gold, at room temperature, is a solid, and therefore its atoms are much more compact. Air is composed of several gases, which consist of very widely spaced atoms. Another reason is that gold atoms are simply much larger and heavier than nitrogen, oxygen, and carbon dioxide particles, which are the main gases in air :)
I hope that helps; I'm just going on what I remember from grade 9 chemistry ^^'
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Lead is more dense than air.
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Is the air inside the balloon less dense than the air outside the balloon?
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It is more dense.
Is carbon dioxide dense or more dense than air?
Carbon Dioxide is less denser than air.
What is cold air more than warm air?
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How much more dense wood than air?
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