Explanation:
In real gases, there exists force of attraction between the molecules at low temperature and high pressure. This is because at low temperature there occurs a decrease in kinetic energy of gas molecules and high pressure causes the molecules to come closer to each other.
As a result, forces of attraction increases as molecules come closer to each other and therefore, gases deviate from an ideal gas behavior.
More is the polarity between the combining atoms in a compound more will be the presence of force of attraction between it. As a result, the molecules will not show ideal behavior.
As , HCl, and are all polar molecules therefore, these tend to deviate from ideal behavior.
Answer:
I would personally say July 29 (B)
Explanation:
Answer:
from the spaces left between chains when the polymer is
formed.
Explanation:
Polyethylene polymer may be of high or low density. Whether the polymer is of high or low density depends on the arrangement of the polymer chains.
If the polymer chains are close together such that the resultant polymer is crystalline with chains packed closely, we have high density polyethylene.
On the other hand if the chains are not close together and there are spaces left between chains when the polymer is formed, then we have low density polyethylene.
Hence, low density polyethylene gets its name from the spaces left between chains when the polymer is formed.
Answer:
To make one gallon of 5% methyl alcohol we require 115.2oz of water and 12.8oz of 50% methyl alcohol solution
Explanation:
Required solution = 1 gallon of 5% methyl alcohol or1 gallon 5/100 moles per dm3 of methyl alcohol
Number of moles in required solution = 0.05moles/dm3 × 1gallon
Where 1 gallon = 0.00378dm3
= 0.05moles/dm3 × 0.00378dm3 = 1.892×10-4 moles
The quantity of the 50% solution with Paul required is given by
50% = 50/100 = 0.5 moles/dm3
Volume of 50% solution of methyl alcohol that contains 1.892×10-4 moles
= concentration = (Number of moles)/(volume of dm3) of solution thus
Volume of solution = (Number of moles)/(concentration)
1.892/0.5 =3.785×10-4dm3 of the 50% solution is required to make 1 gallon of 5% solution
3.785×10-4dm3 = 12.8oz
Thus to make 1 gallon or 128oz solution of 5% alcohol requires
128oz - 12.8 oz = 115.2oz of water and 12.8oz of 50% methyl alcohol solution
Quantity of K2S m = 0.105 m
Number of ions i = 2(K) + 1(S) = 3
Freezing point depression constant of water Kf = 1.86
delta T = i x m x Kf = 3 x 0.105 x 1.86 = 0.586
Freezing point = 0 - 0.586 = 0.586 C
Boiling point constant of water Kb = 0.512
delta T = i x m x Kb = 3 x 0.105 x 0.512 = 0.161
Boiling point = 100 + 0.161 = 100.161 C