1. Convert everything to ounces:

* 1 lb = 16 oz

* 1 lb 8 oz = 16 oz + 8 oz = 24 oz

2. Convert ounces to milliliters:

* 1 ounce ≈ 29.5735 ml

* 24 oz ≈ 24 oz * 29.5735 ml/oz ≈ 709.764 ml

Therefore, 1 lb 8 oz of water is approximately equal to 709.764 ml.