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Question

মানুষের রক্তের pH=7.4 হলে হাইড্রোজেন আয়নের ঘনমাত্রা কত?

4.0e-8 mol/L

4.0e-7 mol/L

1.0e-7 mol/L

1.4e-7 mol/L

ANS : 1

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