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2 answers

when the air mixes with the chemicals it triggers a chemical reaction to bond. their is no air in the tube

2006-11-01 12:15:09 · answer #1 · answered by mr.dj 3 · 0 0

Oxygen is kept out of the tube; it's airtight, so it doesn't dry and stick inside.

2006-11-01 20:17:45 · answer #2 · answered by Sugar Pie 7 · 0 0

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