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ms=24,5 gr. H2SO4
Cp=20%
Vs=20cm3

Cm=?


Răspuns :

Cm=n/Vs(L)
20cm3=200ml
cp=md/ms=> 20=mdx100/24,5=>mdx100=490=>md=4.9g
n=4.9/M
n=4.9/1x2+32+16x4
n=4.9/98
n=0.05moli--H2SO4
Cm=0.05/200
=>0.00025M (mol/litru)