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I used CaCl2 (7g) and effervescent tab (3g)
The liquids i used 10 ml of vinegar and 10ml of cola
It went above our roof so idk how high that is (maybe 15 or so feet?)
it didn't need to be delayed at all i don't think

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Alka-Seltzer and water
I didn't have to delay it

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Couldn't get the rocket off the ground but it made a pretty big reaction!

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(Sorry for the bad quality)

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Elwood

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i cant get my rocket to launch off the ground
the lid just pops off