To find out how many liters of chocolate syrup the hose will pump out in 13 minutes, you can multiply the rate at which the hose pumps syrup (5.9 liters per minute) by the number of minutes (13 minutes).
Calculation: \[ 5.9 \text{ liters/minute} \times 13 \text{ minutes} = 76.7 \text{ liters} \]
Therefore, the hose will pump out 76.7 liters of chocolate syrup in 13 minutes.