The density of water at 29 degrees Celsius is approximately 0.9956 g/cm³.

Here's why:

* Water density is not constant: It changes with temperature.

* Maximum density: Water reaches its maximum density at 4 degrees Celsius (approximately 1 g/cm³).

* Decreasing density: As temperature increases beyond 4 degrees Celsius, the density of water decreases.

Keep in mind that this value is an approximation. The exact density can be slightly affected by factors like pressure and the presence of dissolved substances.