Cho 100ml dd KOH vào 100,ml dd h2so4 0.5M dung dịch vẫn dư axit . Thêm, 100,ml dung dịch NAOH 0.2M vào thì dung dịchtrung hoà. Nôngf độ ,mol /l của dd koh là

What is the nature of the ca-cl bond in a molecule of calcium chloride (cacl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.16?

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element