Ametal stand specifies a maximum load of 450 lb. will it support an aquarium that weighs 59.5 lb and is filled with 37.9 l of seawater (d = 1.03 g/ml)

Yes, it will able to support the aquarium with water.

Explanation:

Weight of the aquarium = 59.5 lb

Mass of the water =m

Volume of the water = 37.9 L

m = 39.037 g = 0.0858814 lb (1 g = 0.0022 lb)

Total weight of the aquarium with water :

= 59.5 lb + 0.0858814 lb = 59.5858814 lb

Maximum load taken by the metal stand = 450 lb

59.5858814 lb < 450 lb

Yes, it will able to support the aquarium with water.