nirav measures out 10cm3 of hydrochloric acid ina test tube. he measures the temperature and then places a piece of metal y into the acid. he also sees bubbles of gas given off. when the reaction finished, he measures the temperature again. first question:1. which variable did simon and nirav need to change in their experiment? 2. which variable or variables have they kept the same?
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Magnesium metal when reacts with an acid gives off hydrogen gas in the reaction. In test tube A fizzing occurs more vigorously because HCl is stronger acid than acetic acid. Hence, HCl liberates hydrogen gas more vigorously, which causes fizzing more vigorously.
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