How many moles of oxygen gas (O2) are in a 2.50 L container at standard temperature and pressure?

I got 2.50 x 100 mol O2

https://www.jiskha.com/questions/1781225/How-many-moles-of-oxygen-gas-O2-are-in-a-2-50-L-container-at-standard-temperature

To find the number of moles of oxygen gas in a given container at standard temperature and pressure (STP), we need to use the ideal gas law. The ideal gas law equation is:

PV = nRT

Where:
P is the pressure (STP is 1 atmosphere)
V is the volume (given as 2.50 L)
n is the number of moles (what we need to find)
R is the ideal gas constant (0.0821 L·atm/(mol·K))
T is the temperature (STP is 273.15 K)

Rearranging the equation to solve for n, we have:

n = PV / RT

Substituting the known values:

n = (1 atm)(2.50 L) / (0.0821 L·atm/(mol·K))(273.15 K)

Now we can solve this equation to find the number of moles of oxygen gas.