Answer:
CCl4 - Nonpolar
CH3OH - polar
NH3 - polar
CS2 - Nonpolar
Explanation:
One important thing that we should know is that polarity has to do with the presence of a resultant dipole moment in a molecule.
Dipole moment is a vector quantity, This means that its direction is also taken into account when discussing the dipole moment of molecules.
Hence, symmetrical molecules such as CS2 and CCl4 are non-polar even though they have polar bonds because their dipoles cancel out(zero resultant dipole moment).
On the other hand, NH3 and CH3OH are non-symmetrical molecules hence they possess an overall dipole moment and are polar molecules.
Tin to Fluorine mass ratios:
1) For compound A:
38.5/12.3
= 3.13
2) For compound B:
56.5/36.2
= 1.56
The lowest whole number mass ratio is 2. It cannot be 1 because it is less than that required for compound B.
I have included the work in the attached file. The correct answer is C. 28.2 grams of Carbon
Answer:
Ionic
Explanation:
Magnesium hydroxide is an ionic compound and its formula is Mg(OH)2. An ionic bond is formed between two atoms when one is electron deficient and the other one is electron sufficient.
Here, Mg2+ is positively charged while OH- is negatively charged. Being oppositely charged strong ionic bonds are formed between these two elements.
An ionic molecule has high boiling and melting point and is stronger than molecules formed by covalent bonds.
