Answer:
a) volume of ammonium iodide required =349 mL
b) the moles of lead iodide formed = 0.0436 mol
Explanation:
The reaction is:

It shows that one mole of lead nitrate will react with two moles of ammonium iodide to give one mole of lead iodide.
Let us calculate the moles of lead nitrate taken in the solution.
Moles=molarityX volume (L)
Moles of lead nitrate = 0.360 X 0.121 =0.0436 mol
the moles of ammonium iodide required = 2 X0.0436 = 0.0872 mol
The volume of ammonium iodide required will be:

the moles of lead iodide formed = moles of lead nitrate taken = 0.0436 mol
 
        
             
        
        
        
<span>1 mole glucose gives 2 moles of ethanol 
moles of glucose in 2.4 kg = 2400 / 180.18 = 13.320 moles 
so moles of ethanol produced = 2* 13.32 = 26.64 moles 
weight of ethanol 26.64 * 46.07 
=1227.30 gm or 1.23 Kg</span>
        
             
        
        
        
C. Ta
Tantalum is an element with an atomic number of 63 and its electronic configuration is:
[Xe] 4f¹⁴ 5d³ 6s²
        
             
        
        
        
D Microscopes
because they use them for DNA 
a,b,and c, all you an item that can be used and not tested with.