Rutherford's model didn't not account for the properties of electrons. bohr placed electrons in layers of orbit so C
Answer:
A and B
Explanation:Ap3x approved :)
Phase change is the solute
the one that doesn't phase change is the solvent.
A
Answer:
7430.5 Joules (7.4*10^4 Joules)
Explanation:
Q=mc∆T
where Q is energy in Joules.
Now m=250 g
c= 0.386 J/g°C
∆T = 99 - 22 = 77 °C
plugging the values in gives
Q=250*0.386*77=7430.5 Joules
(7.4*10^4 Joules, if 2 significant figures)
