- Given mass of [tex] \bf NO_2[/tex] is 122g and we are asked to find number of moles present in 122g of [tex] \bf NO_2[/tex]
[tex]\qquad[/tex][tex] \pink{\bf\longrightarrow { Molar \:mass \:of \: NO_2:-} }[/tex]
[tex]\qquad[/tex][tex] \bf \twoheadrightarrow 14 + 16 \times 2 [/tex]
[tex]\qquad[/tex][tex] \bf \twoheadrightarrow 46[/tex]
[tex]\qquad[/tex]____________________
Calculating the number of moles present in 122g of [tex] \bf NO_2[/tex]
[tex]\qquad[/tex][tex] \pink{\sf\longrightarrow { No \:of \:moles = \dfrac{Given \:mass}{Molar\: mass}}}[/tex]
[tex]\qquad[/tex][tex] \bf \twoheadrightarrow \dfrac{122}{46}[/tex]
[tex]\qquad[/tex][tex] \bf \twoheadrightarrow \cancel{\dfrac{122}{46}}[/tex]
[tex]\qquad[/tex][tex] \bf \twoheadrightarrow 2.65\: moles[/tex]
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