Question

Si se disuelven 80g de glucosa (C6 H12 O6) en 650 ml de agua calcula la concentracion molar de la solucion

Answer 1

Mm C6H12O6 = 180 g/mol
1. convertir mL a L
L = 650 / 1000 = 0.650 L
2. Calcular moles
n = m/Mm
n = 80 g / 180 g /mol
n = 0.444 mol
3. calular M = n/V(L)
M = 0.444 mol / 0.650 L
M = 0.68 molar