实验序号 | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅴ |
乙溶液体积(mL) | 50 | 100 | 150 | 200 | 250 |
气体体积(mL) | 224 | x | 448 | 1120 | 1120 |
(1)甲溶液中Na2CO3的物质的量浓度是
(2)乙溶液中HCl的物质的量浓度是
(3)表中x的值为
同类型试题
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
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