
(1)图A为红磷燃烧测定空气中氧气含量的实验装置,有关的化学方程式为
(2)图B是除去水中不溶性固体杂质的过滤装置.浑浊的粗盐水过滤后发现仍然比较浑浊,可能的原因为
(3)图C是探究质量守恒定律的实验装置,反应停止后,发现天平不平衡了。该反应是否遵守质量守恒定律?

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

