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The protection afforded by calcium oxalate against acid rain Featured science projectScience project video

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Complexity level:
7
Project cost ($):
50
Time required:
1 day for preparation, 5 days for observation
Material availability:
Contact a supplier of commercial marble sealant in your vicinity
Safety concerns:

Warning - An adult is required for the purposes of handling oxalic acid and gloves should be worn at all times. Oxalic acid can be absorbed through the skin and it will react with calcium in the bloodstream, forming kidney stones.