Answer:
B) Expenisive to make
E) Destroys the local ecosystem
Explanation:
answer: C
Explanation:
They are remains that are in rock
Answer:
melting point,boiling point ,density,refractive index.
Explanation:
Answer: 75.7 % yield
Explanation:
The balanced chemical equation is:
According to stoichiometry :
68.2 g of
will require = 64 g of 
Thus 7.5 g of
will require =
of 
Thus is the limiting reagent as it limits the formation of product and is the excess reagent.
As 68.2 g of give = 96 g of
Thus 7.5 g of
give =
of 
% yield=
Thus 75.7 % yield is there.