1 element a has two naturally occurring isotopes forms that

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1. Element A has two naturally occurring isotopes forms that has the masses    108.905 amu   and  106.905 amu. What will be the average atomic mass of element A  if percentage abundance of these two isotopes are 48.17 % and 51.83 %  respectively. ?

 

2. Fe3Cl3 is mixed to remove excess phosphate from the effluent At a waste water treatment plant. the given reaction is  FeCl3 -> Fe3+ + 3Cl- ;Fe3+ + PO43- -> Fe PO4; for this process Determine what concentration of Fe3+ is required to maintain the concentration of phosphate  below the limit of 1 mg P/L? Given that the equilibrium constant for the second reaction = 10^26.4. Ksp = 10^-26.4 (for the reverse reaction)

Reference no: EM13371919

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