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This is an old-school vintage chemistry set that I have sitting on my shelf, and I have only opened it once, many years ago. It's still ...
245 views
2 weeks ago
olevel #chemistrypaper #paper1 Question 1 to 4: *Kinatic particle theory, diffusion, isotopes, elememts** Question 5,6: *Ionic ...
1,679 views
3 weeks ago