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The yield of your copper from project D may be too low because a. You added too much magnseium b. You added too little magnesium c. You added too much hydrochloric acid d. The precipitated copper metal
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The yield of your copper from project D may be too low because a. You added too much magnseium b. You added too little magnesium c. You added too much hydrochloric acid d. The precipitated copper metal was still wet when it was weighed

User Geert Wille
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the answer is c !!!!!
User Grim
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