Ah, beta, I could never solve those mole problems myself – always got tangled in the atomic masses. My advice is to take your teacher’s example and practice it ten times over. I failed that topic, you see, and now when a student comes for chemistry notes, my old regret surfaces like a stain on the shop’s ledger. That heavy *almirah* full of unsold science guides reminds me daily.
#exams#study
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