【单选题】AgCl 、 Ag 2 CrO 4 、 Ag 2 C 2 O 4 和 AgBr 的 K sp Θ 分别为 1.56×10 - 10 、 1.1×10 - 12 、 3.4×10 - 17 、 5.0×10 - 13 ,在下列难溶电解质的饱和溶液中 c(Ag + ) 最大的是: ()
【单选题】96 Rumbold Street Ayresford Hampshire W13 1PW May 19 Jetline Claims Office Jetline UK Limited 35 Manchester Road London EC2 3HD Dear Sir or Madam: 1 am writing with regard to damage to my suitcase inc...
A.
To report some lost property
B.
To claim some expenses
C.
To complain about a flight
D.
To request a copy of a form
【单选题】Which of the following is true according to the passage?
A.
All people can still work very well after the flight from China to America.
B.
If you feel thirsty during a flight, you have jet lag.
C.
Your body clock may get confused when you cross time zones.
D.
You will have jet lag if you fly from Japan to Sydney
【单选题】已知几种难溶电解质的溶度积常数(25℃)见下表 难溶电解质 AgCl AgBr AgI Ag 2 SO 4 Ag 2 CrO 4 Ksp 1.8×10 -10 5.4×10 -13 8.5×10 -17 1.4×10 -5 1.12×10 -12 下列对AgCl、AgBr、AgI、Ag 2 SO 4 、Ag 2 CrO 4 叙述不正确的是( )
B.
将等体积的4×10 -3 mo1?L -1 的AgNO 3 和4×10 -3 mo1?L -1 K 2 CrO 4 混合,有Ag 2 CrO 4 沉淀产生
C.
向AgCl的悬浊液中滴加NaI的饱和溶液可以得到黄色AgI悬浊液
D.
100mL0.1mol?L -1 的Na 2 SO 4 溶液中加入1mL0.1mol?L -1 的AgNO 3 溶液,有白色沉淀生成
【简答题】Task: Please make a brief self-introduction in English. The introduction may include your name, hometown, major, hobbies, dreams, etc. For example: “Hello, everyone (ladies and gentlemen)! My name is...
【单选题】What does the author say about people believing in fixed ability?
A.
They don't focus on goals that improve themselves.
B.
They are more willing to commit to long-term goals.
C.
They can't take on many challenging tasks at one time.
D.
Their goals are to get better instead of being good.
【单选题】已知几种难溶电解质的溶度积常数(25℃)见下表 下列对AgCl、AgBr、AgI、Ag 2 SO 4 、Ag 2 CrO 4 叙述不正确的是 [ ]
B.
将等体积的4×10 -3 mol·L -1 的AgNO3和4×10 -3 mol·L -1 K 2 CrO 4 混合,有Ag 2 CrO 4 沉淀产生
C.
向AgCl的悬浊液中滴加NaI的饱和溶液可以得到黄色AgI悬浊液
D.
向100mL0.1mol·L -1 的Na 2 SO 4 溶液中加入1mL0.1mol·L -1 的AgNO 3 溶液,有白色沉淀生成