Chemistry Past Questions and Answers

The relative atomic mass of a naturally occurring lithium consisting of 90% \(^7 _3\)Li and \(^6 _3\)10% Li is

An isotope has an atomic number of 15 and a mass number of 31. The number of protons it contain is

The molecular lattice of iodine is held together by

The arrangement of particles in crystal lattices can be studied using

From the diagram above, find the amount of solute deposited when 200 cm\(^3\) of the solution is cooled from 55°C to 40°C.