Answer:
The pistil, B.
Explanation:
The seeds are formed from the ovule which is contained in the ovary; all in the base, the pistil.
KOH is the limiting reagent
The molar ratio is 1:2
So if you have 6 moles of MgCl2 you need 12 moles of KOH
Answer: B- Isotopes are often used for dating artifacts and fossils is incorrect.
Explanation: I hope that helped
Answer : The crown is not made of pure (100%) gold.
Explanation :
Formula used :

where,
= apparent weight of the crown in water = 4.50 N
= actual weight = 5.00 N
= density of water = 
= density of crown = ?
Now put all the given values in the above formula, we get:


Density of crown < Density of gold

Thus, the crown is not made of pure (100%) gold.