Respuesta :
Answer:
1. Find the molar mass of NO2 (46.01)
2. Find the number of moles in 25 g of NO2 (by dividing 25 by the molar mass) 25/46.01 = .54
3. For every 3 moles of NO2 there are 2 moles of HNO3. multiply the number of moles of NO2 by 2/3
.54 x 2/3 = .36
4. Finally, multiply this number by the molar mass of HNO3 (63.018)
.36 x 63.018 = 22.68 g HNO3
Explanation:
The statement, that describes the mass of HNO₃ can be made from mass of NO₂ is "17.1 gram".
What is mass?
A substance is something to do with mass that takes up space. The mass of a compound is the total amount of atoms present in grams that make up a molecule. The grams is the unit of mass. In order to determine the mass in grams, divide the given mass of the substance value by its molar mass to convert gram into mole.
What is gram?
The mass about one cubic centimeter of distilled water at 4°C would be used to describe the gram as a unit.
Gram to mole conversion factor,
[tex]= grams\;*\;\frac{1\;mol}{grams}[/tex]
The balanced chemical equation comes out to be, 2NO₂ + H₂O → HNO₂ + HNO₃
Using the above equation, the moles of NO₂ can be determined from the given mass,
[tex]= \frac{given\;mass}{molar\;mass}\\= 25.0\;g\;*\;\frac{1\;mol}{46.005\;g} \\= 0.5434\;mol Now, HNO_{3} can be made from 25.0 g of NO2= 0.5434\;mol\;NO2\;*\;\frac{1\;mol\;HNO3}{2\;mol\;NO2}\;*\;\frac{63.01\;g\;HNO3}{1\;mol\;HNO3} \\= 17.119\;g\;HNO3\\=17.1\;g\;HNO3[/tex]
Hence the correct answer is 17.1 gram.
Learn more about mass and gram here
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