Chemistry Toolbox vs Set Theory Foundations

Features already available: • The BEST MOLECULAR MASS CALCULATOR, by symbol or group abbreviation e.g. K4Fe(CN)6.3H2O, AcOMe... • A periodic table, with element characteristics and a dynamic comparison table • Several calculation tools for solution preparation (dilution, molar mass, molar concentration and density), and converter • Solubility table • pH color indicators • NMR (proton, carbon, constants and multiplets) • Data on common solvents (polarity, elution strength, boiling point, density...) • pKa • Buffer solutions • Organic functions (amino acids, monosaccharides, aromatic compounds, alkanes) • Standard oxidation-reduction potentials • ...

Set Theory Foundations is an independent study app for learners who want focused practice in core set theory ideas, proof habits, and common reasoning patterns. It is built for beginners, students reviewing discrete math, interview prep learners, and anyone strengthening mathematical logic skills. Practice across four focused categories: - Fundamentals - Practical Skills - Common Pitfalls - Advanced Concepts Features include: - 160 practice questions - Every question includes an explanation - FSRS spaced-repetition intervals to review at the right time - Weak-point heatmap to show what needs work - Daily challenge for steady progress - Mock exams for timed review - Offline practice with no login required Use short sessions to drill definitions, operations, relations, functions, cardinality, proof techniques, and tricky edge cases. Review missed questions, track weak areas, and build confidence before class, exams, or self-study milestones. Practice offline, no login required. Independent study app for Set Theory Foundations practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.