Generally, the top elements in group 16 will have a charge of -2, although the entire group isn't standardized.
<span>Answer:
The two basic steps to determine whether a molecule is polar are:
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<span><span>1) determine whether the molecule contains polar bonds?
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2) determine whether the polar bonds add together to
form a net dipole moment.
Explanation:
The fundamental requirement is that there are polar bonds. Polar bonds are covalent bods with dipole moments. Dipole moments are the result of two atoms of different electronegativity sharing electrons. The more electroneative atom pulls the electrons with more strength than the other atom which is what generate the dipole moment.
If the molecule is symmetrical, and the dipole moments are place symmetrically they wil cancel each other and the molecule will not be polar. For example, the molecule of CCl4 has four C - Cl bonds each with dipole moment, but they are loacates symmetrically around the C atom, so they will cancel each other resulting in a zero net sum of dipole moments, being the molecule non-polar.
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Answer:
(a) CH3CH2CH2CH2CH3(l)
(b) CH3CH2OH(l)
- Dipole-dipole interaction
- Dispersion forces
- Hydrogen bonding
(c) H2CO(l)
(d) O2(l)
Explanation:
Dispersion forces are those forces that occur between two non polar molecules.They form the weakest bonds.Here electrons of one molecule is attracted to the nucleus of the other molecule. Example are;
- Interaction of two methyl (-CH₃) group
- Interaction between nitrogen gas , N₂ molecules
- Interaction between oxygen gas ,O₂ molecules
Dipole-Dipole interaction happens when two polar molecules interact.Positive charges in one molecule is attracted to negative charge of another molecule.Examples
- Chloroform (CHCl₃)
- Ammonia (NH₃)
Hydrogen bonding are created when an hydrogen atom bonded to an electronegative atom is attracted to a another electronegative atom.Example is the hydrogen bond between oxygen atom and hydrogen is water (H₂O).
Answer:
4046atm
Explanation:
For this question you can use the ideal gas law,
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Where P is pressure, V is volume, n is moles of substance, R is the constant, and T is the temperature.
Because of the units given, R will equal .08026
<h3>Rearrange the equation to solve for pressure:</h3>
Then, plug in the values (I'll be excluding units for simplicity, but they all cancel out for pressure in atm):
This will give you:
