A-Fe pretty sure ! Do good
Answer:
Cl2
Explanation:
Cl2 is a covalent molecule because it contains 2 non-metal elements.
It is non-polar because both elements have the same level of electrostatic attraction (remember that electrostatic attraction is the tendency to steel an electron from an element with lower a lower electrostatic force)
In Cl2 since there are only 2 molecules that are the exact same there is no overall dipole (which means that one end of the molecule is slightly positive or negative charge)
If the molecule replaced one Cl or something else then it would be non-polar since one element will be more electrostatic than the other and one region of the molecule will have a slightly positive or negative charge, unless the molecule is symmetrical like CH4.
For CH4 (methane) if you drew this as a lewis structure the Carbon would be surrounded by 4 hydrogen atoms meaning the overall dipole will be cancelled out since the molecule is symmetrical.
You may not understand the last part but just know that:
If there are 2 of the same atoms in the molecule (Cl2) then it is non-polar
If there are 2 non-metals then the bond is covalent
Water is always polar
Electronegativity is defined as the extent at which an atom can attract the bonding pair of another in a couvalent bond
fluorine has the highest electronegativity so away from it electonegativity decrease so the answer would be nitrogen as its the closes plus it has a strong nuclear charge with a small radius
hope that helps
The correct answer option is A) benzene.
<u>Explanation:</u>
Benzene is an organic chemical compound (hydrocarbon), consisting of 6 carbon atoms and 6 hydrogen atoms.
Out of all the given options, Benzene will solidify the earliest before reaching a temperature of 0 degree Celcius, when cooled.
The reason being that it has a freezing temperature of 5.5 degree Celcius while all other substances have their freezing points which are below 0 degree Celcius.
Answer:
1.53 atm
Explanation:
From the question given above, the following data were obtained:
Volume = constant
Initial pressure (P₁) = stp = 1 atm
Initial temperature (T₁) = 273 K
Final temperature (T₂) = 144 °C = 144 °C + 273 = 417 K
Final pressure (P₂) =?
Since the volume is constant, the final pressure can be obtained as follow:
P₁ / T₁ = P₂ / T₂
1 / 273 = P₂ / 417
Cross multiply
273 × P₂ = 417
Divide both side by 273
P₂ = 417 / 273
P₂ = 1.53 atm
Therefore, the final pressure (i.e the pressure inside the hot water bottle) is 1.53 atm.