Find the percentage mass of water in the epsom salt MgSO4.7H2O no spamming..
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Formula of EPSOM salt = MgSO4.7H2O
molecular mass of MgSO4.7H2O = atomic mass of Mg + atomic mass of S + 4 × atomic mass of O + 7 { 2 × atomic mass of H + atomic mass of O }
= 24 + 32 + 4× 16 + 7{ 2 × 1 + 16 } g/mol
= (24 + 32 + 64+ 126 ) g/mol
= 246 g/mol
molecular mass of total water = 7 × ( 2× atomic mass of H + atomic mass of O )
= 7 × 18 = 126 g/mol
now ,
% mass of H2O in EPSOM salt = {total molar mass of H2O/molar mass of Epsom salts }× 100
= {126/246 } × 100
= 12600/246
= 51.21 %
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- The percentage mass of water in the Epsom Salt .
☞ Formula of Epsom Salt is,
☞ Molecular mass of Epsom Salt is,
☞ Molecular mass of total water is,
☞ Now, %mass of Water in Epsom Salt is,
%
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♻️ Hence, The percentage mass of water in the Epsom Salt is “51.21%” .
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