b. 0.6g NaOH in 400cm3 solutie
Vs=400cm3=0.4l
md=0.6g NaOH
CM=?
M NaOH=23+16+1=40



c. 25g AgNO3 in 1l solutie
Vs=1l
md=25g AgNO3
CM=?
M AgNO3=108+14+3*16=170



d. 20g NH4NO3 in 200ml solutie
Vs=200ml=0.2l
md=20g NH4NO3
CM=?
M NH4NO3 =14+4*1+14+3*16=80