Ascientist is studying a 2.234 g sample of thorium-229 (t1/2 = 7340 y) in a laboratory.
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Compare and contrast physical changes with chemical changes.
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Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest
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