【单选题】关于稀溶液的依数性的下列叙述中错误的是
B.
稀溶液依数性是指溶液的蒸气压下降、沸点上升、凝固点下降和渗透压
【简答题】稀溶液依数性是指: 在一定温度下难挥发非电解质稀溶液(相对于纯溶剂而言)的蒸气压 下降 ,沸点 (__) ,凝固点 (__) 等(请填入:升高、下降 或 不变) 。
【简答题】In the fourth paragraph, what does the author mean by saying 'a two-way transaction'?
【单选题】What does euthanasia mean?
A.
A way of killing oneself
B.
A way of ending a patient's life naturally
C.
The painless killing of people who are incurably ill or very old
D.
A murder by the doctor
【单选题】In what way does the unemployment affect the unemployed and their families?
B.
It causes the divorce.
C.
It creates a feeling of worthlessness and lack of self-esteem.
【单选题】稀溶液的()是指稀溶液蒸气压下降、沸点上升、冰点下降值都与溶液中溶质的质量摩尔浓度成正比,而与溶质的本性无关。
【单选题】下列有关稀溶液依数性的叙述中,不正确的是( )。A. 稀溶液依数性是指溶液的蒸气压下降、沸点升高、凝固点下降和渗透压。B. 稀溶液定律只适用于难挥发非电解质的稀溶液。C.稀溶液依数性与溶液中溶质的颗粒数目有关。D. 稀溶液依数性与溶质的本性有关。
A.
稀溶液依数性是指溶液的蒸气压下降、沸点升高、凝固点下降和渗透压。
【简答题】What does the man want to know? [A] The way to the fifth floor. [B] The way to Mr. Larry's office. [C] The way to the conference room. [D] The way to the lift.
【简答题】稀溶液的依数性是指溶液的蒸气压下降、沸点升高、( )和滲透压。它们的数值只与溶质的粒子数目 ( 一定量溶剂中溶质的物质的量 ) 成正比。