how many grams of KClO3 would precipitate when a saturated solution containing 200g water is cooled from 70 C to 30 C

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

14 days is the half-life of phosphorus-32

i'm pretty sure its b i might be wrong though!