(1)1%的二氯异氰脲酸钠溶液呈
(2)25℃时,饱和二氯异氰脲酸钠溶液的溶质质量分数为
(3)已知:C3O3N3Cl2Na相对分子质量为220。请计算分析,标签
中“有效氯(Cl%)≥60%”是否为C3O3N3Cl2Na中氯元素的质量分数。
计算过程(列出计算式即可):
结论:“有效氯(Cl%)”
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