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  1. 4 days ago · The Equivalent Mass Calculator serves as a beacon for chemists and students alike, offering a convenient solution for determining the equivalent mass of compounds in chemical reactions. By inputting the molar mass and the number of hydroxyl groups, this calculator provides insights into the equivalence of substances, a fundamental concept in ...

  2. 5 days ago · The concept of percent solution plays a significant role in various scientific disciplines, including chemistry, biology, and pharmacology. It offers a straightforward way to express the concentration of a solute in a solution, making it easier to standardize solutions, perform calculations for reactions, and understand the composition of mixtures.

  3. 2 days ago · The calculation of chemical equilibria in detailed reactor simulations frequently requires elaborate numerical solution of the governing equations in an iterative way, which is often computationally expensive and can significantly increase the overall computation time. In order to reduce these computational costs, we introduce a ready-to-use tool, ANNH3, for calculation of equilibrium ...

  4. 3 days ago · Synthesis of hexamine from formaldehyde. Measure formaldehyde solution. Take 4.7g of 30% formaldehyde solution in a beaker. Add ammonia solution. Add 7g of 24% ammonia solution until the solution becomes slightly alkaline. Heat and cool the solution. Heat the mixture in a water bath for 5 minutes and then allowed it to stand for 15 minutes.

  5. 2 days ago · synthesis of tolbutamide from toluene Procedure: About N-butyl isocyanate (1m mol) and triethylamine (1.2m mol) in a round bottom flask containing 10 ml of tetrahydrofuran, kept in an ice bath. To the above mixture P-toluene sulfonamide (1m mol) was added drop wise at 0oc. After completing the addition, the temperature was suddenly raised to 35 ...

  6. 5 days ago · High universality was confirmed by monitoring the reactions of linear and cyclic acetals (including renewable bio-sourced furan-acetal) with aliphatic and aromatic thiols, and the reaction mechanism of monomolecular nucleophilic substitution (SN1) and auto-protonation (activation) by thiol was clarified by combining experiments and density ...

  7. 2 days ago · Here, the authors present the synthesis of S -stereogenic sulfinamides through the peptide-mimic phosphonium salt-catalyzed asymmetric skeletal reorganization of simple prochiral and racemic ...

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