A. 用等质量、等浓度的过氧化氢溶液在有无催化剂条件下制氧气 |
B. 一定质量的红磷在密闭容器中燃烧 |
C. 向等质量、等浓度的稀硫酸中分别逐渐加入锌粉和铁粉 |
D. 向一定质量的氯化铜和稀盐酸的混合溶液中逐滴加入氢氧化钠溶液 |
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