1.12 hours
actually compressed oxygen does actually have weight.
Black
an oxygen and a hydrogen atom do not weight the same
500 psi
The cylinder will support, at neutral buoyancy, as much weight as the weight of water it could contain, less the weight of the cylinder itself.
1.12 hours
There will be a TW on the side of the cylinder this is the tare weight the weight of the cylinder empty. (TW 27) would be an 27 pound empty cylinder. A full cylinder will weigh 30 pounds more than the tare weight.
Such cylinders are made in a variety of capacities.
Gas
To open the valve on an oxygen cylinder, you turn the valve.
What ever was in the cylinder had weight of its' own. When the cylinder was emptied, only the weight of the cylinder was left.
The atomic weight of oxygen is 15.9994
The weight (not mass) is 69.05 pound weight.
too much weight from too many keys cause the cylinder to wear out. try attaching key to breakaway keychain to reduce weight.
An "E cylinder" is a particular size of oxygen cylinder. 29" tall just under 5" diameter with a capacity of 680 liters of oxygen.
First write the reaction, get moleculr weight of oxygen and reactant. TOD=(mg/L soln)X(weight of O)/(weight of Reactants)