Syllabus Objectives At O levels, students must be able to perform calculations involving the number…
Category: Mole Concept
Question Which substance contains the greatest number of atoms in 1 g?iodine (I2); iron (Fe)…
Question Sodium hydroxide reacts with sulfuric acid. The equation for the reaction is shown.2NaOH +…
The formula of an oxide of element Y is Y2O3. 8.0 g of Y2O3 contains…
The mole is the base unit of amount of substance. One mole of substance has…