The classroom is 9 meters long, 6 meters wide and 3.5 meters high. The air density is 1.29 kg / m3. What is the air quality in the classroom?

The classroom is 9 meters long, 6 meters wide and 3.5 meters high. The air density is 1.29 kg / m3. What is the air quality in the classroom?


Mass = volume * density = length * width * height * density = 9m * 6m * 3.5m * 1.29kg/m3 = 243.81kg/m3



Who can tell me how many cubic meters is a ton of stone


The stone is mainly composed of calcium carbonate with density of 4G / cm3
The volume of 1 ton is 0.25 cubic meters
The actual situation is different. The stones are not in a whole block. There is a gap between them. The actual situation may be about 0.35 cubic meters



How many liters is a ton equal to
It's diesel


One ton of diesel equals 1162 liters
Under normal circumstances, the standard density of diesel oil is about 0.86, that is to say, one liter of diesel oil is about 0.86 kg. Under normal circumstances, the conversion of annual average volume and mass of diesel oil in Jiangnan area is 0.8621, that is, one liter of diesel oil is 0.8621 kg, on the contrary, one kilogram of diesel oil is about 1.16 L