<u>Explanation:</u>
<u>Similarity between the two:</u>
Molecular formula and structural formula gives the exact number of atoms of different chemical elements that are present in a compound.
<u>Difference between the two:</u>
Structural formula gives us the relative positions of the atoms that are present in a compound whereas molecular formula does not give us the relative positions of the atoms. But it gives us the ratio of atoms in a given compound.
Boron fluoride. Since Boron has a 3+ charge, and Fluorine has a 1-, you need 3 atoms of Fluorine and 1 of Boron.
Answer:
Proust concluded that the elements in a chemical compound always present in the same ratio by mass.
Explanation:
In English, this finding became known as the Law of Definite Proportions.
For example, a 100 g sample of copper(II) sulfide always contains 66.46 g of copper and 33.54 g of sulfur.
The mass ratio in CuS is
Cu/S = 66.46/33.54 = 1.982/1
You just switch them around
Answer:
4-ethyl-6-decyne
Explanation:
Counting the carbon atoms from the right gives an ethyl molecule on the 4th carbon.
The 6th carbon atom hosts the functional group, alkyne.
Since the compound is 10 carbon atoms long, with a branch of ethyl on the 4th carbon atom and the alkyne group on the 6th carbon, we hereby call it a 4-ethyl - 6 - decyne.