A chemical reaction must occur for a compound to have different properties.
4 sig fig in that expression
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Sodium Oxide= Na2O
The formula mass of Na2O is (2x23) + 16 = 62g/mol
% Na= (46/62) x 100 = 74%
% O= (16/62) x 100 = 26%</span><span>
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Immposibile because water cannot pass through granite
