What is the number of electrons transferred considering Mn when $\mathrm{KMnO}_4$ is converted into $\mathrm{Mn}_2 \mathrm{O}_3$ ?

Identify sequential reactions involved in Sol-Gel process.

$$ \text { What is IUPAC name of following compound? } $$

What is the number of moles of silver chloride precipitated when excess silver nitrate is treated with one mole of pentaamminecarbonatocobalt (III) chloride?