Respuesta :
Mi * Vi = Mf * Vf
2.5 * Vi = 0.50 * 100.0
2.5 Vi = 50
Vi = 50 / 2.5
Vi = 20 mL
hope this helps!
2.5 * Vi = 0.50 * 100.0
2.5 Vi = 50
Vi = 50 / 2.5
Vi = 20 mL
hope this helps!