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A 0.250 g sample of impure sodium carbonate required 18.29ml of 0.1055M HCI in a titration to methyl orange end point. The percent of Na2CO3 (FW 106 g/mol)in the sample. Select one: O a. 10.23% O b. 42.91% O c. 40.905% O d. 20.46%
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