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Why are our books filled with unnecessary short cut formulas?

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A short cut formula like these add nothing to the understanding of concepts, also overloads children with pointless burden as they have to memorize by parroting. How its need to be solved? P° Solvent = 0.850 bar Mass of solute = 0.5g Mass of solvent = 39g Molar mass of benzene = 78g/mol P Solution = 0.845 bar Molar mass of solute (g/mol) = ? P Solution = χ Solvent P° Solvent χ Solvent = n Solvent / (n Solvent + n Solute ) Solvent: g -----> mol Conversion factor = 1 mol/ 78 g 39g * 1 mol/78 g = 39/78 mol No. of moles of solvent = 39/78 mol Solute: g -----> mole Conversion factor = 1 mol/x g 0.5g * 1 mol/x g = 0.5/x mol No. of moles of solute = 0.5/x mol Putting these values in the equation P Solution = χ Solvent P° Solvent we get following equation (((39/78)/(39/78 + 0.5/x))*0.850) -0.845 = 0 Solving it through python programming: Ans: [169.000000000000] Also why overload students with so much of large calculations (in...

NCERT books nothing more than short notes with giving too shallow knowledge

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Comparative analysis of Openstax chemistry book and our NCERT chemistry book read by largest populated country Review of chapter Atoms, Molecules and Ions of Openstax and Structure of Atom in NCERT Openstax starts the chapter with a picture mass spectral analysis. Mass spectrometry is a very important technique to study atomic properties. To make you more curious it talks about the diagnosis of diseases through analysis of molecules in an exhaled breath. But ncert book image is this: NO IMAGE Let's come down to the introduction: NCERT Chemistry: The existence of atoms has been proposed since the time of early Indian and Greek philosophers (400 B.C.) who were of the view that atoms are the fundamental building blocks of matter. According to them, the continued subdivisions of matter would ultimately yield atoms which would not be further divisible. The word ‘atom’ has been derived from the Greek word ‘a-tomio’ which means ‘uncut-able’ or ‘non-divisible’. Th...

Jupyter notebook to write notes and exercises, learn by applying knowledge

Jupyter notebook can be used to make your notes and solve exercises with programming without using pen and paper. In order to write notes, you can use markdown which is a very simple markup language and can be learned within 15mins to get started. You can use latex and Unicode characters to write equations and symbols. To learn latex you can use google, e.g. website https://en.wikibooks.org/wiki/LaTeX/Mathematics Jupyter notebook can be used in any subjects where the calculation is required, such as physics, mathematics, economics, even biology etc. No need to scratch your head, if you forgot the formula, or made mistakes in calculation when done with pen and paper. Learn by applying things that will be useful in real life situations Everyone should learn code, in early age just like other subjects. One computer to each child is required. https://github.com/amiyatulu/teaching_chemistry View: https://nbviewer.jupyter.org/github/amiyatulu/teaching_chemistry/blob/master...