How many liters are
in 4.27 mol of o2?

Molar volume of a gas is that 1 mol of an ideal gas occupies 22.4 L at standard temperature and pressure.

We have to assume that O₂ behaves similar to an ideal gas.

Volume changes with pressure and temperature, since the question does not specify the temperature and pressure conditions we are assuming its at standard temperature and pressure conditions

volume occupied by 1 mol - 22.4 L

therefore volume occupied by 4.27 mol - 22.4 L/mol x 4.27 mol = 95.65 L

volume occupied by 4.27 mol of O₂ is 95.7 L

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in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm