Question

6.3 de ácido nítrico se disuelven en 250 mL de solución. Calcular la Molaridad

Answer 1

Mm HNO3 =  63 g/mol

1. calcular moles

n = masa/Mm

n = 6.3 g / 63 g/mol

n = 0.1 mol

2. convertir mL a L

L = 250 / 1000 = 0.250 L

3. Calcular M = n/V(L)

M = 0.1 mol / 0.250 L

M = 0.4 molar