Chemistry Olympiad and other competitions

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[1] Chemistry Olympiads - links to national competitions problems

[2] Chemistry Olympiads forum - initial remarks

[3] Where I can find the solutions to the preparatory problems for ICHO 2022?

[4] Chemical formula of tooth erosion

[5] Latin American Chemistry Competition (2nd edition)

[6] Flemish chemistry olympiad question

[7] Can someone tell me what I'm doing wrong here? (calculation)

[8] Question about coordinate covalent bond

[9] Ideal gas law question

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