hitunglah molaritas larutan jika 3 gram urea (Mr Co(NH2)2=60) dilarutkan kedalam air sampai volume 250 mL

Massa urea = 3 g
Mr urea = 60
Volume = 250 mL
Molaritas = mol/L atau
= g/Mr x 1000/V(mL)
= 3/60 x 1000/250
= 12/60
= 0.2 M