小葵查询相关资料后,知道要配制某种浓度的NaOH水溶液100mL,需加入NaOH 16.0g。如图的步骤一至步骤四为她在室温下进行此浓度溶液配制,以及溶液密度测量的步骤示意图。步骤四完成后,经老师提醒,才知道烧杯上的刻度标示仅为参考之用,误差较大。所以小葵待溶液温度回到室温后,再以量筒测量溶液的总体积如步骤五所示。
![](http://static.xuejinqu.com/qimg/924/92425cd1b5ea81c60c22eb024c29b814.png)
依测量的结果可知,用此方法和器材配制溶液确实会有较大的误差。应改用容量瓶等器材来配制溶液。小葵实际配制出的溶液密度最接近下列何者?( )
A.0.86g/cm3 | B.1.10g/cm3 | C.1.16g/cm3 | D.1.22g/cm3 |
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)