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Sagot :
6.2 divided by the mass number of NO3 is 0.1 moles. Anytime your trying to find the moles of something you divide it by the mass number of your combined elements.
Answer : The number of moles of [tex]NO_3[/tex] is, 0.1 moles
Solution : Given,
Mass of [tex]NO_3[/tex] = 6.2 g
Molar mass of [tex]NO_3[/tex] = 62 g/mole
Now we have to calculate the moles of [tex]NO_3[/tex].
[tex]\text{Moles of }NO_3=\frac{\text{Mass of }NO_3}{\text{Molar mass of }NO_3}=\frac{6.2g}{62g/mole}=0.1moles[/tex]
Therefore, the number of moles of [tex]NO_3[/tex] present in 6.2 g is, 0.1 moles
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