Digital ACT Science Practice Question #1542
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2:1 ratio: H2 has twice the volume of O2.
The stoichiometry produces 2 moles of H2 gas for every 1 mole of O2 gas (2:1 volume ratio). Gas A has twice the volume (40 mL vs 20 mL), so Gas A is hydrogen (H2) and Gas B is oxygen (O2)....
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