A 1.00 g sample containing $BaCl_2\cdot2H_2O$ is heated to a constant mass of 0.835 g. What was the mass percent of barium in the original sample?

A chemical balance used normally for weighing in laboratory can weigh upto a least count of :

A 2.00 g sample of a mixture of $CaCO_3$ and $CaSO_4\cdot2H_2O$ was heated to a constant mass of 1.55 g. What percent by mass of the original sample was $CaCO_3$?

What is the molar mass of $CO_2$? (Atomic masses: C = 12u, O = 16u)

From the equation, $3{{\rm{C}}_2}{{\rm{H}}_2} o {{\rm{C}}_6}{{\rm{H}}_6},$ find the volume of acetylene (NTP) for the manufacture of 3 mole of benzene:

Millimole of a solute in a solution can be given by :

What volume of 2$N$ ${{\rm{K}}_2}{\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}$ solution is required to oxidise 0.81 g of ${{\rm{H}}_2}{\rm{S}}$ in acidic medium?

Volume of $C{O_2}$ produced on heating 10 g of limestone at S.T.P

What products are expected from the disproportionation reaction of hypochlorous acid

The equivalent weight of ${\rm{KMn}}{{\rm{O}}_4}$ (acidic medium) is (at. wt. of K = 39; $Mn$ = 55) :

How many gram of ${\rm{KMn}}{{\rm{O}}_4}$ are contained in 4 litre of 0.05 N solution? The ${\rm{KMn}}{{\rm{O}}_4}$ is to be used as an oxidant in acidic medium :