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Showing posts from January, 2022

How to Trick Your Brain Into Loving Study Sessions (Seriously)

Studying doesn’t have to feel like a slog. The truth is: your brain isn’t built to drag through hours of tedium—it responds best to pattern, reward and rhythm. By shifting how you approach study time, you can turn it from duty into something your brain actually enjoys. ‎Here are five simple, smart ways to do it. Try one today and see how your focus follows. ‎1. Study in Short Bursts, Not Endless Sessions    ‎Forget the idea that you must sit for three hours straight. Cognitive science shows our attention drops significantly after about 25–30 minutes. So use the Pomodoro Technique : study for 25 minutes, take a 5‑minute break; after four rounds, give yourself a longer break (15–20 minutes). That rhythm gives your brain permission to reset—and makes that “next block” easier to start.  ‎2. Turn Learning into a Game ‎The brain loves victory—even tiny ones. Set fun micro‑challenges: finish chapter one in 20 minutes, get 10 questions right in a row, or beat yesterday’s time. E...

Useful hints in analysis of a mixture of calcium chloride and Iron tetraoxosulphate VI

       The analysis requires a good knowledge of the specific reactions of the ions with certain reagents, for example an unknown solution which contains copper ions will give a deep blue solution with excess ammonia solution.   Related post Qualitative analysis of copper(II)tetraoxosulphate VI So what we are going do here is to identify these ions using their specific reactions.   A mixture of calcium chloride and iron (II) tetraoxosulphate (VI) will undergo a double decomposition reaction to yield calcium tetraoxosulphate (VI) and iron (II) chloride. CaCl 2 (aq) + FeSO 4 (aq) --------- FeCl 2(aq) + CaSO 4(s) Since calcium tetraoxosulphate (VI) is insoluble, iron(II)chloride   can easily be filtered off with filter paper or by any other means possible. How to identify the Cations in the mixture Cations are positive charged ions. We have two of these types of ions in the mixture which ·         Iron (I...