In this video, we will focus on Miscibility of liquids. What is miscibility? Miscibility is…
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In this video, we will focus on simple distillation. Simple Distillation Basics Simple distillation is…
In this video, we will focus on displacement reaction, a chemical reaction that Group VII…
Syllabus Objectives At O levels, students must be able to perform calculations involving the number…
Question Which substance contains the greatest number of atoms in 1 g?iodine (I2); iron (Fe)…
At O levels, students must be able to describe, using dot-and-cross diagrams, the formation of…
Question Sodium hydroxide reacts with sulfuric acid. The equation for the reaction is shown.2NaOH +…
When heated, two moles of X give one mole of oxygen and two moles of…
The formula of an oxide of element Y is Y2O3. 8.0 g of Y2O3 contains…
The table in the question shows details of the particles present in an atom of…