Reactivity trends of halogen:
1) Melting point and boiling points increased down the
group
2) Colour becomes darker.
E.g. Fluorine (pale yellow)
Chlorine (yellowish-green)
Bromine (reddish-brown)
Iodine (purplish-black)
Astatine (black)
3) The reactivity decreases down the group.
Reactivity:
F > Cl > Br > I > At
Scientists use radioactive decay to date fossils and artifacts through a process called "carbon dating," which measures the amount of carbon still left in a dead object. The less carbon that exists, the longer that animal or plant as been dead.
Answer: 2C8H18 + 25O2 -> 16CO2 + 18H2O
Explanation:
Answer:
7.3 mole
Explanation:
1 C6H10S gives 10H
0.73 mole of C6H10S gives X mole of Hydrogen
X= 0.73×10=7.3mole
Answer:
The correct solution is "93.48 M".
Explanation:
According to the question,
The number of moles of NaOH will be:
= 
= 
The number of moles of needed 
will be:
= 
= 
hence,
The concentration of solution will be:
= 
= 
= 
