STP is the same for all gasses an gaseous mixtures: 0 degrees Celsius at a prssure of 1 atm.
Arguably, none. But oxygen exists in 2 forms at STP - O2 and O3 - ozone.
nitros oxide N2O
Because oxygen gas (O2) has a molar mass of 32g/mol, 11.3 g * 1/32 mol/g gives about .35 moles. An ideal gas has a volume of 22.4 L/mol at STP, so 11.3 g O2 would have a volume of 7.91 L at STP.
The chemist (or anyone who cares to simply look it up) knows that the density of oxygen is about 1.429 g/liter at STP. That's 1429 mg/1000 ml or 1.428 mg/ml for your answer.
at stp 1 mole of a gas contains 22.4 litres. 9.1/22.4= .40625 moles o2. 1 mole of a gas contains 6.022E23 molecules so .40625 moles x 6.022E23 = 2.4464325E23 molecules, but you have to multiply by two due to it being diatomic, so answer x 2 = 4.892875E23 molecules
At STP it is a gas
A gas at STP.
hydrogen, nitrogen, oxygen, fluorine, and chlorine are all gases at STP
part of the oxygen group....gas, nonmetal...
They are both elements, they are both gases at STP.
A cubic decimeter is a liter, so we're talking 50L of oxygen gas at STP. 1mol of any gas at STP occupies 22.4L of space, so 50/22.4 = about 2.2mol of oxygen.
3.058
5600 mL
Liquid oxygen is pale blue below -182.95°C (boiling point at StP)
Arguably, none. But oxygen exists in 2 forms at STP - O2 and O3 - ozone.
0.67 mol
The volume is 64,8 L.