Question

cuantos gramos de soluto hay en 700 ml de solucion 1 molar kno3

Answer 1

Mm KNO3 = 101.10 g/mol

1. convertir mL a L

1 L ----- 1000 mL
  X -----   700 mL

x = 0.700 L

2. calcular moles despejando de la fórmula.

M =  mol soluto
       ````````````````
           V (L)

mol soluto = 1 mol /L  x 0.700 L

mol soluto = 0.700

3. calcular gramos

g = 0.700 mol KNO3   x    101.1 g KNO3
                                        ``````````````````````` 
                                           1 mol KNO3

g = 70.77 g de KNO3