What is a precipitate? 1) A solid product of a chemical reaction that is in aqueous form.
2) A solid product of a chemical reaction that is not in aqueous form.

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What is the percentage of hydrogen in c2h4

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?