Ionic salt dissociate completely in water particularly in water at low concentration.
The molal freezing point of depression constant for water is 1.85kg/k/mol
therefore depression of freezing point =1.853 x 0.100 x 2.32=0.429 degrees celsius
hence solute freeze at - 0.429 degree celsius
The correct answer is C.atoms are divisible
H₂SO₄ + 2NH₃ = (NH₄)₂SO₄
m{(NH₄)₂SO₄}=M{(NH₄)₂SO₄}n(H₂SO₄)
m{(NH₄)₂SO₄}=132.1g/mol*60.0mol=7926 g = 7.926 kg
Moles of hydrogen = 5.08 x 10^16
---------------------------
6.02 x 10^23
= 8.43 x 10^-8 moles.
D. Black holes
When a star dies out it explodes and causes a supernova and after a very long period of time the supernovas gasses vanish and the star can be visibly identified as a black hole!
