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 :

State Gay-Lussac's law of combining volumes of gases. Give an example. 

Determine the values of $\mathrm{X},\mathrm{Y},\mathrm{Z}$ in the given reaction.

$\mathrm{Fe}(\mathrm{CO}{)}_5+\mathrm{yNO}\to [\mathrm{Fe}\left(\mathrm{CO}{)}_{\mathrm{x}}{\mathrm{NO}}_{\mathrm{y}}\right]+\mathrm{zCO}$

Determine the volume of one mole of any gas at S.T.P, assuming behaves like an ideal gas.

$\underset{1 \mathrm{volume}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}+\underset{1 \mathrm{volume}}{{\mathrm{Cl}}_2\left(\mathrm{g}\right)}\to \underset{2 \mathrm{volume}}{2\mathrm{HCl}\left(\mathrm{g}\right)}$

The combining ratio of ${\mathrm{H}}_2, {\mathrm{Cl}}_2 \text{and} \mathrm{HCl}$ is:

The statement related to law of definite proportions is

Among the following pairs of compounds, the one that does not illustrate the law of multiple proportions, is

Two elements $\mathrm{X}$ (of mass $16$) and $\mathrm{Y}$ (of mass $14$) combine to form compounds $\mathrm{A},\mathrm{B}$ and $\mathrm{C}$. The ratio of different masses of $\mathrm{Y}$ which combine with a fixed mass of $\mathrm{X}$ in $\mathrm{A},\mathrm{B}$ and $\mathrm{C}$ is $1:3:5$, if $32$ parts by mass of $\mathrm{X}$ combines with $84$ parts by mass of $\mathrm{Y}$ in $\mathrm{B}$, then in $\mathrm{C},16$ parts by mass of $\mathrm{X}$ will combine with;

4.4 g of an oxide of nitrogen gives 2.24 L of nitrogen. 60 g of another oxide of nitrogen gives 22.4 L of nitrogen at STP. This data illustrates the law of:

4 grams of hydrogen reacts with some oxygen to make 36 grams of water. Figure out how much oxygen must have been used by applying the law of conservation of mass?

The law of definite proportions states that a given chemical compound always contains the same elements in the exact same proportion by mass.

The individual elements that constitute a chemical compound are always present in a _____.

What are the significance of the law of definite proportion?

There are five laws of chemical combinations.

A balanced chemical reaction follows law of conservation of _____

Law of conservation of energy states that mass can neither be created nor destroyed.

Law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses.

What is the significance of law of conservation of mass?

"One gram molecules of a gas at N.T.P. occupies $22.4$ litres". This fact was derived from

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