Question

Using the balanced chemical equation and the initial mass of magnesium calculate the mass of hydrogen gas that should be produced when the reaction is complete
Balanced Chemical equation: Mg(s)+2HCI(aq)=MgCl_2+H_2Mg(s)+2HCI(aq)=MgCl2 +H2
​Mass of Magnesium Metal
Trial 1: 0.089g
Trial 2: 0.179g

from the equation, each mole of Mg produces 1 mole of H2
So, figure how many moles of Mg you have, and multiply that by 2g to find the mass of H2.

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