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1.40 kg is equal to 1.40 / 0.03418= 40.96 mole H2S, thus 40.96 mole of S (sulfur) which is 40.96 * 0.03207= 1.31 mole S

(0.03418 and 0.03207 are molar masses of H2S and S respectively in kg/mol)

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11y ago

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