31. 右图(1)表示甲、乙两种固体的溶解度随温度变化的情况；右图(2)A、B试管中分别盛有甲、乙两种固体的饱和溶液,试管底部均有未溶解的固体.向烧杯中加入一种物质,发现A试管中固体增多．

31. 右图(1)表示甲、乙两种固体的溶解度随温度变化的情况；右图(2)A、B试管中分别盛有甲、乙两种固体的饱和溶液,试管底部均有未溶解的固体.向烧杯中加入一种物质,发现A试管中固体增多．
31. 右图(1)表示甲、乙两种固体的溶解度随温度变化的情况；右图(2)A、B试管中分别盛有甲、乙两种固体的饱和溶液,试管底部均有未溶解的固体.向烧杯中加入一种物质,发现A试管中固体增多．B试管中固体减少,则加入的物质是
A．硝酸铵 B．浓硫酸 C．氢氧化钠 D．生石灰

..

31. 右图(1)表示甲、乙两种固体的溶解度随温度变化的情况；右图(2)A、B试管中分别盛有甲、乙两种固体的饱和溶液,试管底部均有未溶解的固体.向烧杯中加入一种物质,发现A试管中固体增多．
发现A试管中固体增多．B试管中固体减少,说明是降温过程
故答案应选A
B．浓硫酸 C．氢氧化钠 D．生石灰均能使水温度升高

A，毕业好几年了，不知道各物质的特性，应该是A

正确答案：A
因硝酸铵溶于水能使温度降低，甲的溶解度随温度降低而减小，乙的溶解度随温度降低而升高，所以，甲析出，乙溶解。A试管中固体增多．B试管中固体减少。

NBA Finals Bulls advance Heat cooked

the Bulls have maintained the lead
(Reporter Chen Jia-Kun) Beijing today, NBA playoffs continue. wholesale Miami won 83 reversed than 80, having a t...

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NBA Finals Bulls advance Heat cooked

the Bulls have maintained the lead
(Reporter Chen Jia-Kun) Beijing today, NBA playoffs continue. wholesale Miami won 83 reversed than 80, having a total score four to at least one cut, will the Mavericks championship.
Opening to depend on offensive rebounds Ross scored two points, followed by Luol Deng ? field objective, leading the Bulls to four to 0. Wade hit two totally free throws, hit James within the cast, even though Ross as soon as once more tipped to win the two points, however the game then created the rhythm from the Heat, the Large 3 played together the culmination of the 8 to 0 to 12 go-ahead much more than 6 the score. wholesale from China Following a pokey initial 50 % of the section following the Bulls within the initial quarter impact of the other half firmly inside, and resolute in defense forced Miami jumper. The very first section, the hit rate with the Bulls into five to 25 to 21 lead, they scored within the paint for 16 points. Section Bulls off of the bench who dominated the game, heat suspended twice with no success, the Bulls rapidly compared to 25 to 37, 12 points ahead, the Heat's scoring drought lasted five minutes 06 seconds. Heat pressure of cross God has his opponent a 7 to 0, both sides of the tug of war, leading the Bulls to 45 than 38 into the intermission.
The second half, the Bulls have maintained the lead before the fourth quarter to attain once more and once more drop ship wholesalers Miami is drawing near, but the Bulls will probably be worse as soon as once more time for you to expand to double digits when individuals believe that race is no longer on the suspense, the warmth suddenly get angry , and inside A few seconds, Wade labeled as three 1, James and two-thirds vote, 1 minute left within the game, both sides battle into 79 levels, Bulls 12-point lead disappear in four minutes . Lastly, two leading players from the moment Competition, James hit a jumper and go-ahead score, Ross created two totally free throws inside a crucial moment. Lastly, the Miami Heat beat the Bulls to 83 than 80, the championship with the Dallas Mavericks.

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氢氧化钠，高中化学里讲的比较多

D