题目内容

NH3·H2O质子条件式为 [H+]+[NH4+] = [OH-] ( )

A. 对
B. 错

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NaHCO3 质子条件式为 [H+]+[H2CO3] = [CO32-]+[OH-] ( )

A. 对
B. 错

Na2CO3 质子条件式为 [HCO3-]+[H+]+[H2CO3] = [OH-] ( )

A. 对
B. 错

NH4HCO3 质子条件式为 [H+]+[H2CO3] = [NH3]+[CO32-]+[OH-] ()

A. 对
B. 错

It sounds ______. Many children of his age don’t even know if a number is odd or even.

A. good
B. odd
C. exciting
D. satisfying

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