How mang h20 molecules are in o.10 g of sample cuso45h2o?
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Atomic mass of H =1g
atomic mass of O=16g
atomic mass of Cu =63.5 g
atomic mass of S=32 g
NOW
molar mass of cuso4 .5H20=atomic mass of Cu +atomic mass of S+4×atomic mass of O+5 ×(2×atomic mass of H +atomic mass of O)
=63.5+32+4×16+5(2+16)g
=63.5+32+64+90g
=249.5 g
atomic mass of O=16g
atomic mass of Cu =63.5 g
atomic mass of S=32 g
NOW
molar mass of cuso4 .5H20=atomic mass of Cu +atomic mass of S+4×atomic mass of O+5 ×(2×atomic mass of H +atomic mass of O)
=63.5+32+4×16+5(2+16)g
=63.5+32+64+90g
=249.5 g
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