X is girl, and y is boy, they are formed by fission.
1: parent alkane.
2: polymers
3: idk
4: alkynes
5: its either n-butane or isobutane
6: saturated hydrocarbons
7: i'm not sure but I think it's Lewis Dot Structure and Polarity. ... Benzene
8: Idk
9: I'm not sure either
Hope this helps! :)
If it's to balance the equation then it's already balanced.
Explanation:
Suppose in 100 g of alloy contains 90% titanium 6% aluminum and 4% vanadium.
Mass of titanium = 90 g
Moles of titanium = 
Total number of atoms of titanium ,
Mass of aluminum = 6 g
Moles of aluminium = 
Total number of atoms of aluminium,
Mass of vanadium = 4 g
Moles of vanadium= 
Total number of atoms of vanadium
Total number of atoms in an alloy = 
Atomic percentage:

Atomic percentage of titanium:
:
Atomic percentage of Aluminium:
:
Atomic percentage of vanadium
:
Answer:
A. Alternating single and double bonds
Explanation:
Hydrocarbons i.e. hydrogen and carbon containing compounds, are grouped into two namely: aliphatic and aromatic hydrocarbons. Aliphatic hydrocarbons contains straight or branched chains of carbon and hydrogen atoms in their structure e.g. alkanes, alkenes etc.
On the other hand, aromatic hydrocarbons are cyclic hydrocarbons containing one or more cyclic rings. The benzene ring is the basis of all aromatic hydrocarbons and one characteristics of benzene is that it possesses an alternating single (-) and double bonds (=) in their structure.
Since benzene is a building constituent of aromatic hydrocarbons, an "alternating single and double bond" is a characteristics of aromatic hydrocarbons.