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Chemistry, 14.02.2021 18:40 haileygrace4154

QUESTION 1 At a birthday party, some balloons were filled with hydrogen and others with helium. The hydrogen filled balloons
fook 16 hours to go flat. How long would have taken for the helium filled balloons to go flat?​

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QUESTION 1 At a birthday party, some balloons were filled with hydrogen and others with helium. The...
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