The density of urine decreases when a diabetic secretes too much sugar.
When there is excess sugar in the blood, the kidneys release extra water.
The result is a <em>more dilute</em> and therefore <em>less dense urine</em>.
The urine from a non-diabetic person usually has a density of 1.010 g/mL to 1.025 g/mL.
The urine from a diabetic person often has a density less than 1.008 g/mL.
The mass of the air in the room is
50 kg.
V = lwh = 15.5 ft × 12.5 ft × 8 ft = 1550 ft³
1 ft = 12 in ×

= 30.48 cm
V = 1550 ft³ ×

= 4.39 × 10⁷ cm ³ = 4.39 × 10⁷mL = 4.39 × 10⁴ L
Mass = 4.39 × 10⁴ L ×

= 5.22 × 10⁴ g = 52.2 kg
Note: The answer can have only 1 significant figure, because that is all you gave for the height of the room.
To the correct number of significant figures, the mass of the air in the room is 50 kg.
Answer:
I know that Aerogel is the lightest metal in existence, but I don't think it would help much with your answer. I mean you can give it a try?