A solution containing 10.mmol of co3-2 and 5.0 mmol. of, Ask an Expert

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I need help balancing the following chemical equations. (using whole number coefficients) (note that the numbers I have indicated should be subcript)

k2Cr207 + h20 + S ----> SO2 + KOH + cr203
CuO + NH3 ----> H20 + Cu + N2
NH4CL + Ca(OH)2 ----> CaCl2 + NH3 + H20
NH3 + 03 ---> N205 + H20
C6H6 + 02 ---> CO2 + H20
As2O3 + I2 + H20 ---> H3Aso4 + HI

A solution containing 10.mmol of CO3^-2 and 5.0 mmol. Of HCO3- is titrated with 1.0M HCL What total volume of HCL must be added to reach the second equivalence point?

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