2 years ago

Escaping from the haunted house, Anna ran home immediately to her chemistry lab

1 answer:

6 0

89.1% Au

The molar mass of Au2O3 is 2(196.97) + 3(16.00) = 441.94 g/mol
The mass percent of Au is therefore 2(196.97) / 441.94, which is 393.94/441.94 = 0.891 —> 89.1%

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