Ahydrocarbon molecule is considered to be saturated when the molecule contains

The best phrase to complete the sentence is "single bonds".  A hydrocarbon molecule is considered to be saturated when the molecule contains single bonds. Alkanes are a saturated type of hydrocarbon. They only consists of hydrogen and carbon atoms in single bonds. The general formula is CnH2n+2. C4H10 is the molecular formula for butane. It is an example of a saturated hydrocarbon.

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