6) How many molecules are there in 122 grams of NO2?

Question

asked Jun 8, 2023 16.5k views

1 Answer

Karthik V · Answer 1 · 2023-06-14T22:34:03+0000

Given mass of
$\bf NO_2$ is 122g and we are asked to find number of moles present in 122g of
$\bf NO_2$

$\qquad$
$\pink{\bf\longrightarrow { Molar \:mass \:of \: NO_2:-} }$

$\qquad$
$\bf \twoheadrightarrow 14 + 16 * 2$

$\qquad$
$\bf \twoheadrightarrow 46$

$\qquad$ ____________________

Calculating the number of moles present in 122g of
$\bf NO_2$

$\qquad$
$\pink{\sf\longrightarrow { No \:of \:moles = (Given \:mass)/(Molar\: mass)}}$

$\qquad$
$\bf \twoheadrightarrow (122)/(46)$

$\qquad$
$\bf \twoheadrightarrow \cancel{(122)/(46)}$

$\qquad$
$\bf \twoheadrightarrow 2.65\: moles$

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