A metal M forms a volatile carbonyl complex $M(CO)_x$. 0.525g of this complex is heated in a closed vessel of volume 250 mL at $50^\circ C$. The pressure inside the vessel after complete decomposition of the complex is 746 Torr. If the gas constant R is 0.0821 L atm $K^{-1} mol^{-1}$, what is the value of x in the formula $M(CO)_x$? (Assume the metal M does not contribute significantly to the pressure)

In chromatography, the component that travels the furthest on the chromatogram is the one that is:

Which method is best suited for separating a mixture of two immiscible liquids with different densities?

The number of moles of ${K_2}C{r_2}{O_7}$ that will be needed to react with one mole of nitrite ion in acidic solution is

A mixture of sand, salt, and iron filings can be separated using a combination of methods. Which sequence is the most efficient?

Reactants react in the equal number of …….. to give products.

What volume of 0.1 $M{\rm{KMn}}{{\rm{O}}_4}$ is needed to oxidise 100 mg of ${\rm{Fe}}{{\rm{C}}_2}{{\rm{O}}_4}$ in acidic solution?

Crystallization is a purification technique based on the principle of:

Which of the following methods is NOT typically used for concentrating a dilute ore?

For the reaction : ${{\rm{N}}_2} + 3{{\rm{H}}_2} o 2{\rm{N}}{{\rm{H}}_3}$ ; if ${E_1}\,and\,{E_2}$ are equivalent masses of $N{H_3}$ and ${N_2}$ respectively, then ${E_1}\, - \,{E_2}$ is :

$0.2$ g of a sample of ${{\rm{H}}_2}{{\rm{O}}_2}$ required $10$ mL of $N{\rm{KMn}}{{\rm{O}}_4}$ in a titration in the presence of ${{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}{\rm{.}}$. Purity of ${{\rm{H}}_2}{{\rm{O}}_2}$ is :