Here is a site my buddie has to help you. Well co-owner..
https://www.quora.com/Why-is-fresly-prepared-FeSO4-required-for-the-ring-test
Oxygen is the 8th element in the periodic table. This means that oxygen has 8 protons<span> and 8 electrons. In order to get the number of neutrons you take the atomic weight in this case 15.9999~16 and you subtract it by the number of protons (16-8) (o_O)
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Explanation:
TO calculate emperical formula , we need percentage composition of the elements and molecular mass of a specific compound which is already given in the question
then create a table with 1.name of element, 2.percentage given and its atomic mass , 3.no. of moles
( %given/at.mass of element) ... then take the least value in the no. of moles you have found now and divide with each no. of moles value .. to get a simple digit number.
You have got the empirical formula
Molar mass HCl = 36.5 g/mol
number of moles:
mass of solute / molar mass:
9.63 / 36.5 => 0.263 moles
Volume = 1.5 L
M = n / V
M = 0.263 / 1.5
M = 0.1753 mol/L
espero ter ajudado!
Molecules are made of atoms. Cells are made by a multitude of molecules. ... So cells are made of molecules and, consequently of atoms .
