已知10 ml Na2R溶液含Na+的微粒数为N,则该Na2R溶液的物质的量的浓度为

已知10 ml Na2R溶液含Na+的微粒数为N,则该Na2R溶液的物质的量的浓度为

A. mol/L                           B. mol/L

C. mol/L                D. mol/L

 

答案

B

解析:

 

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