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23-08-2022
Chemistry

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To collect a beaker of H2 gas by displacing the air already in the beaker, would you hold the beaker upright or inverted? Why? How would you hold the beaker to collect CO₂?

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Solemnly, mournfully,Dealing its dole,The Curfew BellIs beginning to toll.(5) Cover the embers,And put out the light;Toil comes with the morning,And rest with t