What percentage water is in 600ml of black coffee?

* Coffee is not a simple solution. It's a complex mixture of water, dissolved compounds (like caffeine), and suspended particles (like coffee grounds).

* The water content varies. The percentage of water in black coffee depends on how strong the coffee is brewed. A stronger brew will have less water per volume.

To get an estimate:

* Assume a strong brew: A strong brew might have around 95% water.

* Calculate: 95% of 600 ml is (95/100) * 600 ml = 570 ml

Therefore, a strong 600 ml black coffee could have around 570 ml of water.

Important Note: This is just an approximation. The actual water content can be higher or lower depending on the brewing method and coffee type.