A.图中P点表示10℃时丙的饱和溶液 |
B.10℃时,甲、乙、丙三种物质的溶解度,甲的溶解度最大 |
C.20℃时,甲、乙、丙饱和溶液降温至10℃,甲溶液中析出固体最多 |
D.20℃时,向130g乙的饱和溶液中加入20g水,所得溶液的溶质质量分数变为20% |
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