从500mL1mol/L NaOH溶液中取出100mL溶液,对这100mL溶液的叙述中正确的是

500mL1mol/L NaOH溶液中取出100mL溶液对这100mL溶液的叙述中正确的是 (   )

A物质的量浓度1mol/L            B溶液中含1mol NaOH
C
溶液中含0.4g NaOH                D物质的量浓度为0.2 mol/L

答案

A

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