An empty cylindrical canister 1.50 m long and 91.0 cm in diameter is to be filled with pure oxygen at 25.0 c to store in a space station. to hold as much gas as possible, the absolute pressure of the oxygen will be 21.7atm . the molar mass of oxygen is 32.0g/mol .finda. how many moles of oxygen does this canister hold? b. for someone lifting this canister, by how many kilograms does this gas increase the mass to be lifted?

Part a)

Part b)

Explanation:

Volume of the cylindrical container is given as

now we have

pressure of the gas is given as

Now we have

Part b)

Mass of the container is increased as the mass of the gas

measuring things 1 litre of water

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.