Question

calculate the no. of molecules in 0.5 moles of hydrogen

Answer 1

$\Longrightarrow{\boxed{\bold{Answer: 3 \times 10^{23} molecules}}}$

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

$\textbf{\textit{\underline{Since we know that,}}}$

1 mole of any element = 6.022 × 10²³ molecules

Similarly,

1 mole of hydrogen = 6.022 × 10²³

0.5 moles of hydrogen will have

= 6.022 × 10²³ × 0.5 molecules

= 6.022 × 10²³ × 5/10 molecules

= 6.022 × 10²³ × ½ molecules

= 3.011 × 10²³ or approximately

$\bold{\huge{= \underline{ 3 \times 10^{23}\:molecules}}}$

Answer 2

Answer:

3.011*10^23

Explanation:

No. Of molecules = moles * avogadro no.

= 0.5 * 6.022* 10^23

= 3.011 * 10^23