(4分)250℃时将24.8gNaOH和NaHCO3的混合物放在密闭容器中加热,充分反

(4)250时将248gNaOHNaHCO3的混合物放在密闭容器中加热,充分反应后,称得剩余固体的质量为23g。请回答:

(1)NaOHNaHCO3的物质的量之比          l(><=)

(2)NaOH的物质的量为         

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