Some Basic Conc...

Maximum percentage of chlorine is in :

Avogadro's law shows the relationship between which two variables?

Statement I : At STP, 22.4 liters of He will have the same volume as one mole of $$\displaystyle { H }_{ 2 }$$ (assume ideal gases).
Statement II : One mole or 22.4 liters of any gas at STP will have the same mass.

Natural abundances of $$^{12}C$$ and $$^{13}C$$ isotopes of carbon are $$99\%$$ and $$1\%$$, respectively. Assuming they only contribute to the mol. wt. of $$C_2F_4$$, the percentage of $$C_2F_4$$ having a molecular mass of $$101$$ is:

1 g of silver gets distributed between $$10\ cm^3$$ of molten zinc and $$100\ cm^3$$ of molten lead at $$800^o C$$. The percentage of silver in the zinc layer in approximately:

What is the percentage of sulphur in sulphuric acid $$(H_2SO_4)$$?

Two vessels of volumes $$16.4\ L$$ and $$5\ L$$ contains two ideal gases of molecular existence at the respective temperature of $$27^{\circ}C$$ and $$227^{\circ}C$$ and exert $$1.5$$ and $$4.1$$ atm, respectively. The ratio of the number of molecules of the former to that of the later is:

The total number of electrons present in $$18 \ mL$$ water (density $$1g/mL$$) is:

The density of a liquid is 1.2 g/mL. That are 35 drops in 2 mL. The number of molecules in 1 drop is (molecular weight of liquid = 70): 

20 ml of $$H_2O_2$$ after acidification with dil $$H_2SO_4$$ required 30 ml of N/2 $$KMnO_4$$ for complete oxidation .Calculate the $$\%$$ of $$H_2O_2$$ in g/lit.