将氧化还原反应Ni+2Ag+====2Ag+Ni2+设计为一个原电池,则电池的负极为______,正极为______,原电池符号为____
将氧化还原反应Ni+2Ag+====2Ag+Ni2+设计为一个原电池,则电池的负极为______,正极为______,原电池符号为______。若(Ni2+/Ni)=-0.25V,(Ag+/Ag)=0.80V,原电池的电动势为______,为______,该反应的平衡常数为______。
将氧化还原反应Ni+2Ag+====2Ag+Ni2+设计为一个原电池,则电池的负极为______,正极为______,原电池符号为______。若(Ni2+/Ni)=-0.25V,(Ag+/Ag)=0.80V,原电池的电动势为______,为______,该反应的平衡常数为______。
第1题
Sports
①Almost everybody likes sports
②People in different places like different sports
③As for me, ?
第2题
What makes people more tolerant of diversity between different groups?
A.Extensive communications.
B.Language development.
C.Close cooperation.
D.Direct interactions.
第3题
A、nod
B、shave
C、wave
D、shake
第4题
A、only in different places
B、only at different time
C、under different circumstances
D、under few circumstances
第5题
Which of the following is not true?
A.In some places people pretend not to see you although they are polite.
B.It is good manners to give a burp when you've had enough.
C.Sometimes manners are different in different places in the same country.
D.Good manners are ways of showing that people are friendly to each other.
第6题
A、Reports
B、Telephone meetings
C、video conferencing
D、Face-to-face meetings
第9题
The last paragraph shows music makes it possible______.
A.that music can express actions and feelings
B.people can enjoy singing and dancing to music
C.to bring understanding between people of different times and places
D.to make people of different times and places happy
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