Mole Concept

How many number of molecules are present in $73 \mathrm{g}$ of $\mathrm{HCl}$?

$1\mathrm{g}$ atom of an element or $1\mathrm{g}$ molecule of a substance is equal to

Which of the following would weigh the least?
$(\mathrm{Ag}=108, \mathrm{N}=14, \mathrm{O}=16 \mathrm{and} \mathrm{C}=12)$

The ratio between the number of molecules in $2 \mathrm{g}$ of hydrogen and $32 \mathrm{g}$ of oxygen is

The cost of table salt $\left(\mathrm{NaCl}\right)$ and table sugar $\left({\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}\right)$ is $2$ per kg and $6$ per kg, respectively. Calculate their costs per mole.

Calculate the number of moles in the $11.2\mathrm{g}$of iron and $63.5\mathrm{\mu g}$ of carbon.

A certain gas $\mathrm{X}$ occupies a volume of $100 {\mathrm{cm}}^3$ at STP and weighs $0.5 \mathrm{g}$. Find its relative atomic mass.

Calculate the number of ${\mathrm{Cl}}^{-} \mathrm{and} {\mathrm{Ca}}^{2+}$ ions in $222\mathrm{g}$ of anhydrous ${\mathrm{CaCl}}_2$.

Calculate the volume of $320\mathrm{g}$ of ${\mathrm{SO}}_2$ at STP. (Atomic mass of $\mathrm{S}=32$ and $\mathrm{O}=16$).

Define the following term

Molar volume.

Define the following term.

Mole number.

What is the symbol for SI unit of mole?

What will be the mass of one atom of $\mathrm{C}-12$ in gram?

Number of molecules = _____ $\times$ Avogadro's number. (Atomicity / Number of moles)

Which one is heavier, $1$ mole of ${\mathrm{C}\mathrm{O}}_2$ or $1$ mole of $\mathrm{C}\mathrm{O}$?

If $22\mathrm{}\mathrm{g}$ of ${\mathrm{C}\mathrm{O}}_2$ occupy V litre at $\mathrm{S}\mathrm{T}\mathrm{P}$ then what volume would $32\mathrm{}\mathrm{g}$ of ${\mathrm{O}}_2$ occupy at $\mathrm{S}\mathrm{T}\mathrm{P}$? Justify your answer.

What is the difference between relative atomic mass and relative molecular mass of oxygen?

The vapour density of ${\mathrm{C}\mathrm{O}}_2$ gas is $22$. Find its molecular mass.

What is the mass (in grams) of $2.5$ moles of slaked lime, $\mathrm{C}\mathrm{a}{\left(\mathrm{O}\mathrm{H}\right)}_2$?

Calculate the mass of one atom of oxygen.