M NaCl=58,5g/mol
1mol NaCl-----58,5g
xmoli NaCl-----11,7g
x = 0,2mola NaCl
Z def. stęż. procent.
0,2mola NaCl-------80cm3 roztworu
xmoli NaCl---------1000cm3 roztworu
x = 2,5mola NaCl
x = 2,5mol/dm3
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M NaCl=58,5g/mol
1mol NaCl-----58,5g
xmoli NaCl-----11,7g
x = 0,2mola NaCl
Z def. stęż. procent.
0,2mola NaCl-------80cm3 roztworu
xmoli NaCl---------1000cm3 roztworu
x = 2,5mola NaCl
x = 2,5mol/dm3