When the temperature of a substance decreases to the substance's freezing point, the substance will begin to change from
a
to a
(assume the substance is at standard atmospheric pressure.)
a
gas, solid
b.
liquid, gas
c.
d.
solid gas
liquid, solid

When the temperature of a substance decreases to the substance's freezing point, the substance will begin to change from a liquid  to a solid.

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

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.