what is the minimum concentration of o2 as mass percent in the aquarium?
( assume the density of water in aquarium is 1g/ml)
The minimum concentration of o2 necessary for a fish to live in an aquarium is 4mg/L?
2018-01-12 5:09 pm
回答 (1)
2018-01-12 5:33 pm
✔ 最佳答案
Consider 1 L of water in aquarium :Mass of 1 L of water in aquarium = (1 × 1000 ml) × (1 g/ml) = 1000 g
Minimum mass of O₂ in 1 L if water in aquarium = (4 mg/L) × (1 L) = 4 mg = 0.004 g
Minimum mass percent of O₂ in aquarium = (0.004/1000) × 100(%) = 0.0004%
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