Question

Question:

Calculate the number of moles and number of molecules of CO2 in 11.2 litre at NTP.

Answer 1

Hello

.

Muski

=>

no of moles = 11.2/22.4 => 0.5 moles

no of molecules =

0.5 × 6.02 × 10^23 × 3 = 9.03 ×10^24

Answer 2

$\huge\mathsf{\underline{Solution:}}$

$<font color="orange"><b>$

$\mathtt{We\:know\:that-}$

$number \: of \: moles = \frac{volume \: of \: substance}{molar \: volume}$

$\mathtt{=11.2/22.4}$

$\mathtt{=1/2}$

$\bold{\boxed{No.\:of\:moles=0.5}}$

$\mathtt{Now,}$

$\mathtt{We\:know\:that-}$

$no. \: of \: moles = \frac{no. \: of \: molecules}{avogadros \: number} \\ \\ 0.5 = \frac{no. \: of \: molecules}{6.023 \times {10}^{23} } \\ \\ no. \: of \: molecules = 0.5 \times 6.023 \times {10}^{23} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 3.012 \times {10}^{23}$

$\bold{\boxed{No.\:of\:molecules=3.012 \times {10}^{23} }}$

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