(d) Why is hydrogen peroxide preferred in the
preparation of oxygen gas?
(e) Why is oxygen collected by downward
displacement of water ?
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(d) Why is hydrogen peroxide preferred in the
preparation of oxygen gas?
(e) Why is oxygen collected by downward
displacement of water ?
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Answer:
if oxygen enters upward it will be easy to put my monster into ur puss*.
if oxygen enters downward then it will be little pain if I put my monster
inside ur puss*