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Molar mass

Na: 23 g/mol

O : 16 g/mol

H : 1 g/mol

Total NaOH: 40 g/mol

Mass percentage

%Na: 23/40 = 57.5%

%O : 16/40 = 40%

%H : 1 /40 = 2.5%

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Q: What is the mass percentage of each element in the compound sodium hydroxide?
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