高二化学平测
Quiz
•
Chemistry
•
11th Grade
•
Hard
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17 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在相同的温度和压强下,二氧化碳和笑气(化学式:N2O)的体积相同,则它们的下列物理量中一定相同的是:①分子数 ②原子数 ③密度 ④质量 ⑤物质的量
只有①⑤
只有①②④⑤
只有②③④⑤
全部
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
0.1摩尔的金属M与1.68L(在STP时)的氧气完全反应。由此而形成的氧化物其分子式是________。
M3O4
M2O
M2O3
MO
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在常温常压下,右列哪项所含的原子数目最多?
7g氢气
3mol氨气
2mol氮气
88L一氧化碳
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某气体样本含有10g氖气与8g氧气。在25时这个混合气体的总压强是100kPa。问在25时混合气体中的氧气的分压强是多少?
33kPa
50kPa
55kPa
67kPa
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列叙述中,正确的是______________。
在标准状况下,1mol水的体积约为22.4L
在标准状况下,一定量的任何气体的体积都约为22.4L
在相同条件下,1mol一氧化碳和1mol二氧化碳所含的分子数目相同,体积也相同
当温度高于0°C 时,1mol任何气体的体积都大于22.4L
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在一定温度下,把x克气体的体积压缩到原体积的,此时气体的压强____________。
增大到原压强的3倍
减小 1/3
减小到原压强的1/3
增大到原压强的6倍
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知阿伏加德罗常数、物质的摩尔质量及摩尔体积。下列物理量中,尚不能全部计算出近似值的是_________。
固体物质分子的大小和质量
液态物质分子的大小和质量
气体物质分子的大小和质量
气体物质分子的质量
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