Answer:
Answers:
Option B
Option A.
Explanation:
For part A
The applicable equation is the Clausius-Clapeyron equation. The equation relates the vapor pressure and temperature like this:
We know that P₁ = 6.63 torr
R = 8.314 kj/mol
T₁ = 106.5⁰ = 379.65 K
T₂ = 38⁰ = 311.15 K
ΔH = 43 300J/mol
using the equation to solve for P₂, we get 67.8 torr
For part B
Water is a polar molecule. The bonds in the water are hydrogen bonds; water forms strong hydrogen bonds between the molecules. However, the gases in the air are non polar. Nitrogen and argon are inert gases - nonreactive. Nitrogen has a triple bond N≡N and argon is inert. Oxygen is a bi-atomic gas, O₂.
Hence the only forces in the water with the gases are dipole-induced dipole forces.
<span>16 = m x 1.86
m = 8.60 = moles solute / 6.50 Kg
moles solute = 55.9
mass solute = 55.9 x 62.068 g/mol=3470 g
V = 3479/ 1.11 =3126 mL= 3.13 L
delta T = 8.60 x 0.512 =4.40
boling point = 104.4 °C
Hope this helps.</span>
N=n×Nav
n=N / Nav
(5.71×10^22) / (6.02×10^23)
n=0.09mol
Answer 1) It is incorrect.
Explanation : For the statement;
Thomson did experiments with cathode ray tubes to show that all atoms contain tiny negatively charged subatomic particles called as electrons<span>.
So the statement should be like this:
AFTER the </span><span>Thomson’s experiments, scientists accepted that the atom was made up of smaller particles.
Answer 2) This is correct.
Explanation : Rutherford was the scientist who discovered that atoms has volume is because of the empty spaces inside it. He did the gold foil experiments to prove this and he was successful in doing this by concluding that tiny dense empty places are occupied by positively charged nucleus.
Answer 3) This is Correct.
Explanation : After Thomson and Rutherford, Millikan also performed an experiment to prove that an atom contains a small positively charged nucleus which is usually surrounded by negatively charged electrons by his oil drop experiment.</span>
