Respuesta :

The US a fluid ounce is defined as 29.57 mL and as a result, a 16.9 fl.oz. bottle will contain around 500 mL of liquid. This means that you need 2 bottles of 16.9 fl.oz. to make up 1 Liter in the US 

so do 16.9 x 2 = 1 liter