Use Raoult's Law:
Psolution = (χsolvent) (P°solvent)
24.90 = (x) (25.756)
x = 0.966765 (this is the solvent mole fraction)
χsolute = 1 - 0.966765 = 0.033235
χsolute = 0.03324 (to four sig figs)
One molecule of water contains two atoms of hydrogen and one atom of oxygen, the atomicity of water is three.
A. electron, B. Nucleus
Proton is positive charge, electron is negative charge
proton weight, 1 AMU
Heat radiates from the fire and cooks the marshmallow because heat transfer.