Question

Calculate number of particales present in 5g of hydrogen gas

Answer 1

$\Longrightarrow{\boxed{\bold{Answer:3 \times 10^{24}\:particles }}}$

$\textbf{\underline{Step-by-step explanation :- }}$

No. of moles = W in g / W in g/mol

Atomic mass of H = 1 g/mol

No. of moles = 5 g / 1 g/mol

No. of moles = 5 moles

✍️✍️✍️✍️✍️✍️✍️✍️✍️

1 mole of H = 6.022 × 10²³ atoms

5 moles of H = 6.022 × 10²³ atoms

= 30.11 × 10²³ atoms or approximately

$\bold{\large{=\underline{ 3 \times 10^{24}\:particles}}}$

Answer 2

$\huge\bold{BACK\:TO\:BACKK}$

$<b><u>hey buddy$

no of particles present in 5 g hydrogen gas = no of atoms in 5 moles of hydrogen gas...

then i.e, given by...

(here particles mean atoms..)..

so,, 1g hydrogen = 1 mol = N a(Avogadro no)

SIMILARLY,,

5g hydrogen = 5 mol = 5 × N a

= 5× 6.022× $10^{23}$

= 30.11× $10^{23}$

= 3.011 × $10^{24}$

so therefore there are totally 3.011×$10^{24}$.. in 5g hydrogen..
$\huge{bye}$

$<b><i> RGRDS @STYLG...$