题干

常温下,甲为0.1mol/L的HA溶液,pH>1;乙为0.1mol/L的BOH溶液,且溶液中c(OH﹣):c(H+)=1012.请分别写出甲、乙两溶液中溶质的电离方程式____、____.
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HA⇌H++A﹣,BOH=B++OH﹣

同类题3

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    For some people, choosing which sports to play throughout high school is hard because they have never really played an organized sport before and aren't sure what they'll enjoy most.____

    ____ If you're great at basketball but would rather play football because you think it's more fun, then give it a go (just make sure it's coot with morn and dad).

    Sports are meant to be fun.____ What's the worst that can happen? If you get cut, you can always try another sport. And sports like track don't typically cut participants from the team. You can still participate even if you're not in the team for the competition.

    Some sports, like basketball or baseball, require every person on the field to be working well together.____

    Sports like tennis, track and field, swimming, gymnastics, and wrestling are all sports where individual performances are tallied(计分)into team scores.____ However, for the most part it's possible to win a solo event in these sports and still have your team lose or vice-versa(反之亦然).

    No one knows you better than you do. Maybe you enjoy the spotlight. Maybe you get annoyed by the way teammates act. Luckily, there are many individualized sports to choose from.

A.Many people are attracted to team sports.

B.Besides swimming, try fishing, sailing, skiing, and surfing.

C.Of course there are exceptions, like relays in track and swimming.

D.For others it's tough because their friends don't like to play the same sports.

E.No matter what your problem is, you have to make the decision that is best for you.

F.If there is a sport you really enjoy but you aren't sure if you can make the team, try out anyway.

G.Sure, certain people perform much better than others, but superstars don't necessarily make a good team!

同类题4

下表中不能体现19世纪后半期铁路交通发展的基本特征的是(     )
1870—1900年的铁路网         单位:千公里
年份
全世界
欧洲
美洲
亚洲
非洲
澳洲
1870年
1880年
1890年
1900年
210
372
617
760
105
169
224
284
93
175
331
402
8
16
34
60
2
5
9
20
2
8
19
24