皮皮学，免费搜题
登录
搜题
【单选题】
在某100 mL混合溶液中，HNO 3 和H 2 SO 4 的物质的量浓度分别为0.400 mol·L -1 和0.100 mol·L -1 ，向该混合溶液中加入1.92 g铜粉，加热使其充分反应，若反应前后溶液体积视作不变，反应后溶液中Cu 2+ 的物质的量浓度为（   ）
A.
0.15 mol·L -1
B.
0.225 mol·L -1
C.
0.3 mol·L -1
D.
0.6 mol·L -1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】In order to avoid loss in taxes, the Senecas
A.
let the court decide cigarette-tax issues.
B.
decided to cooperate with the non-Indians.
C.
would replace the Marlboros with Philip Morris.
D.
planned to do the cigarette business all by themselves.
查看完整题目与答案
【判断题】汇票中的受票人,也称付款人,是指受出票人委托支付票据金额的人、接受支付命令的人。
A.
正确
B.
错误
查看完整题目与答案
【单选题】以下列化学式表示的物质的溶度积都相同,其溶解度最大的是 .........( ).
A.
MX
B.
M 3 X
C.
M 2 X
D.
MX 2
查看完整题目与答案
【单选题】To avoid loss of antifreeze due to expansion, the cooling system .
A.
must not be completely filled
B.
must install a bypass valve
C.
must install a pressure control valve
D.
must be sealed
查看完整题目与答案
【单选题】净营运资本增额为正，说明()。
A.
净营运资本回收
B.
净营运资本投资
C.
净营运资本减少
D.
净营运资本增加
查看完整题目与答案
【单选题】导致近代中国经济的落后和人民的贫困主要原因是 ( )
A.
帝国主义侵略
B.
外国帝国主义和中国封建主义的联合统治
C.
封建主义压迫
D.
农民与地主阶级的矛盾
查看完整题目与答案
【单选题】You may be able to avoid loss of suction in a pump by ______.
A.
Using a full tank to keep the pump primed
B.
Opening the vent cock on the pump
C.
Closing down on the tank valve
D.
All of the above
查看完整题目与答案
【单选题】It doesn’t matter how much loss we have suffered; just avoid _____ the mistake again.
A.
to make
B.
being made
C.
having made
D.
making
查看完整题目与答案
【单选题】To avoid loss of antifreeze due to expansion, the cooling system .
A.
must not be completely filled
B.
must install a pressure control valve
C.
must install a bypass valve
D.
must be sealed
查看完整题目与答案
【单选题】To avoid loss of antifreeze due to expansion, the cooling system .
A.
must install a bypass valve
B.
must not be completely filled
C.
must be sealed
D.
must install a pressure control valve
查看完整题目与答案
相关题目：
【单选题】In order to avoid loss in taxes, the Senecas
A.
let the court decide cigarette-tax issues.
B.
decided to cooperate with the non-Indians.
C.
would replace the Marlboros with Philip Morris.
D.
planned to do the cigarette business all by themselves.
查看完整题目与答案
【判断题】汇票中的受票人,也称付款人,是指受出票人委托支付票据金额的人、接受支付命令的人。
A.
正确
B.
错误
查看完整题目与答案
【单选题】以下列化学式表示的物质的溶度积都相同,其溶解度最大的是 .........( ).
A.
MX
B.
M 3 X
C.
M 2 X
D.
MX 2
查看完整题目与答案
【单选题】To avoid loss of antifreeze due to expansion, the cooling system .
A.
must not be completely filled
B.
must install a bypass valve
C.
must install a pressure control valve
D.
must be sealed
查看完整题目与答案
【单选题】净营运资本增额为正，说明()。
A.
净营运资本回收
B.
净营运资本投资
C.
净营运资本减少
D.
净营运资本增加
查看完整题目与答案
【单选题】导致近代中国经济的落后和人民的贫困主要原因是 ( )
A.
帝国主义侵略
B.
外国帝国主义和中国封建主义的联合统治
C.
封建主义压迫
D.
农民与地主阶级的矛盾
查看完整题目与答案
【单选题】You may be able to avoid loss of suction in a pump by ______.
A.
Using a full tank to keep the pump primed
B.
Opening the vent cock on the pump
C.
Closing down on the tank valve
D.
All of the above
查看完整题目与答案
【单选题】It doesn’t matter how much loss we have suffered; just avoid _____ the mistake again.
A.
to make
B.
being made
C.
having made
D.
making
查看完整题目与答案
【单选题】To avoid loss of antifreeze due to expansion, the cooling system .
A.
must not be completely filled
B.
must install a pressure control valve
C.
must install a bypass valve
D.
must be sealed
查看完整题目与答案
【单选题】To avoid loss of antifreeze due to expansion, the cooling system .
A.
must install a bypass valve
B.
must not be completely filled
C.
must be sealed
D.
must install a pressure control valve
查看完整题目与答案