Given that `50 0 mL` of `0.01M Na_(2)S_(2)O_(3)` solution and `5xx10^(-4)` mole of `Cl_(2)` react according to equation,
`Cl_(2(g))+S_(2)O_(3)^(2-)rarrSO_(4)^(2-)+Cl^(-)+S`
Answer the following:
What is the molarity of `Na_(2)SO_(4)` in this solution?
A. `0.080 M`
B. `0.040 M`
C. `0.020 M`
D. `0.010 M`

Given that `50 0 mL` of `0.01M Na_(2)S_(2)O_(3)` solution and `5xx10^(-4)` mole of `Cl_(2)` react according to equation,
`Cl_(2(g))+S_(2)O_(3)^(2-)rarrSO_(4)^(2-)+Cl^(-)+S`
Answer the following:
(iii) How many equivalents of oxidising agents are in this sample for the above reaction?
A. `0.001`
B. `0.080`
C. `0.020`
D. `0.010`