ABO identification system is the system of determining the blood type of the Human being by checking the presence of Antigens "A" & "B" on the surface of their RBCs. If A is present, then it is A Blood group, if B, then it is B blood group, if both, then AB and if neither then it is called as O blood group.
Rh Factor is the type by which we classify individuals into two groups - Rh +ve with Rh factor on their surface and Rh - ve, which lacks of it
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Answer: 103.8 g of 
, 0.65 moles of
Explanation:
To calculate the moles :
Thus 
is the limiting reagent as it limits the formation of product and 
is the excess reagent.
According to stoichiometry :
3 moles of produce = 2 moles of
Thus 0.975 moles of will produce=
of
Mass of 
Thus 103.8 g of will be produced.
Sn + 2Cl2 ------> SnCl4
from reaction 2 mol 1 mol
from the problem 2.85 mol x mol
x=2.85*1/2≈1.43 mol SnCl4
B; Seismometer would be the answer.
