Laws of Chemical Combination

The molecular weight of ${\text{O}}_2$ and ${\text{S}\text{O}}_2$  are $32$ and $64$ respectively. At $15^o\text{C}$ and $150$ mm of Hg pressure, one litre of ${\text{O}}_2$ contains ‘N’ molecules. The number of molecules in two litres of ${\text{S}\text{O}}_2$ under the same conditions of temperature and pressure will be :

Gay Lussac's law is actually the law of definite proportions by volume.

_____law is actually the law of definite proportions by volume.

Discuss the significance of Gay Lussac's law of gaseous volumes.

What is the significance of law of reciprocal proportions?

When $10 \mathrm{mL}$ of propane (gas) is combusted completely, the volume of ${\mathrm{CO}}_2\left(\mathrm{g}\right)$ obtained in similar condition is:

${\mathrm{H}}_2\mathrm{S}$ contains $94.11\%$ sulphur; ${\mathrm{SO}}_2$ contains 50% oxygen and ${\mathrm{H}}_2\mathrm{O}$ contains $11.11\%$ hydrogen. Thus, 

Two substances $\mathrm{I}$ and $\mathrm{II}$ of carbon and oxygen have respectively $72.73\%$ and $47.06\%$ oxygen. Hence, they follow:

The volume of one mole of a gas is called _____ .

'The matter can neither be created nor destroyed but one form of matter can be converted into other' the said law is _____ law of thermodynamics.(first/second)

An electric discharge is passed through a mixture containing $50 \mathrm{ml}$ of ${\mathrm{O}}_{2( \mathrm{g})}$ and $50 \mathrm{ml}$ of ${\mathrm{H}}_{2( \mathrm{g})}$. The volume of the product $\left({\mathrm{H}}_2\mathrm{O}\right)$ formed at $110°\mathrm{C}$ will be. (Identical conditions of temperature and pressure):

Potassium chloride contains $52\%$ of $\mathrm{K}$, potassium iodide contains $23.6\%$ of $\mathrm{K}$ and iodine monochloride contains $77.8\%$ of $\mathrm{I}$.  The given information illustrates which of the followin laws?

Given $3\mathrm{g}$ of carbon reacts with $1\mathrm{g}$ of hydrogen to form ${\mathrm{CH}}_4$ and $8\mathrm{g}$ of oxygen reacts with $1\mathrm{g}$ of hydrogen to form ${\mathrm{H}}_2\mathrm{O}$. Similarly, $12\mathrm{g}$ of carbon reacts with $32\mathrm{g}$ of oxygen to form carbon dioxide. In both cases the ration of carbon and oxygen is 3 : 8. Which of the following laws illustrate the given example?

Which of the following compounds verify Law of Reciprocal Proportions?

Two oxides of metal contain $36.4 \mathrm{and} 53.4$ percent of oxygen by mass respectively. If the formula of the first oxide is ${\mathrm{M}}_2\mathrm{O}$, then that of the second oxide is 

$100 \mathrm{g}$ of ethylene polymerizes to polythene according to the equation:
$\mathrm{n} {\mathrm{CH}}_2={\mathrm{CH}}_2\to {\left({\mathrm{CH}}_2-{\mathrm{CH}}_2\right)}_{\mathrm{n}}$
The mass of polythene produced will be

Two oxides of metal contain $36.4 \mathrm{and} 53.4$ percent of oxygen by mass respectively. If the formula of the first oxide is ${\mathrm{M}}_2\mathrm{O}$, then that of the second is

Calculate The total no. of oxygen and Nitrogen atoms present in a mixture containing 8.2g Ca ,10 mM of NaNo₃ and No / 6 molecule  of No₂(g). Report their nearest whole number ratio

The Following data are obtained when dinitrogen and dioxygen react together to form different compounds.
 

The composition (by atom) of compound A is $40\% \mathrm{X}$and $60\% \mathrm{Y}$. The composition (by atoms) of compound B is $25\% \mathrm{X} \mathrm{and} 75\% \mathrm{Y}.$According to the law of multiple proportion, the ratio of the weight of element Y in compounds A and B is: