find out the percentage of elements in Apsum(MgSO4.7H2O)
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Answer:
Symbol Element Atomic weight Atoms Mass percent
Mg Magnesium 24.3050 1 9.2952 %
S Sulfur 32.065 1 12.2629 %
O Oxygen 15.9994 4 24.4752 %
H Hydrogen 1.00794 140 53.9667 %
Explanation:
Computing molar mass (molar weight)
To calculate molar mass of a chemical compound enter its formula and click 'Calculate!'. In chemical formula you may use:
Any chemical element
Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
parantesis () or brackets [].
Common compound names.
Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, water, nitric acid, potassium permanganate, ethanol, fructose.
Computing molecular weight (molecular mass)
To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.
Definitions of molecular mass, molecular weight, molar mass and molar weight
Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Weights of atoms and isotopes are from NIST article.
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Related: Molecular weights of amino acids
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The formula of Epsom salt is MgSO4.7H2O
The molecular weight of it is 246 amu.
% of Mg = (24/246)x100 = 9.75%
% of S = (32/246)x100 = 13%
% of O = (176/246)x100 = 71.54%
% of H = (14/246)x100 = 5.7%
Hope it helps!!