Just like any other gas, that depends on what size jar of it you have (volume),
its temperature, and how tight it's packed into the jar (pressure).
"Standard" temperature and pressure means the temperature of freezing water
and the pressure of air at sea level.
In those conditions, the density of oxygen is 1.429 grams per liter.
So 1 cubic foot of it would weigh 1.427 ounces. (rounded)
A liter is a measurement of volume. So, it depends on the temperature of said oxygen but use the formula, (M=PVm/RT).
in word form
(Mass) = (Pressure)*(Volume)*(Molar Mass) / (R constant)*(Temperature)
Please remember to use metric measurements for all these calculations.
About a kilogram.
It depends on what it is 900 millilitres of - if it was 900 ml of lead it would weigh more than 900 ml of oxygen.
Different scuba gear types weigh different amounts. The oxygen tank is the heavy part of the scuba diving gear.
carbon= 12.01 oxygen=16*2 12.01+32=44.01 CO2
16.0 grams O (1000 milligrams/1 gram) = 16000 milligrams
its a gas you cant weigh it
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2.000 moles of oxygen atoms weigh 32.00 g. 2.000 moles of oxygen molecules, on the other hand, weigh 64.00 g.
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