Question

Values for the molar mass of nitrogen, oxygen, and nitrogen dioxide

molecules are given in the table below. What mass of nitrogen dioxide
molecules is formed when 1 mole of nitrogen reacts with 2 moles of oxygen
and forms nitrogen dioxide?
Molecule
Molar mass (g/mol)
N2
28.02
02
32.00
NO2
46.01

Answer 1

When 1 mole of nitrogen reacts with 2 moles of oxygen to form nitrogen dioxide, 92.02 g of nitrogen dioxide is formed, as two moles of NO2 are produced from the reaction.

Step-by-step explanation:

The student is asking about the mass of nitrogen dioxide (NO2) formed when 1 mole of nitrogen (N2) reacts with 2 moles of oxygen (O2) to form nitrogen dioxide according to the chemical reaction:

N2 + 2O2 → 2NO2

According to the stoichiometry of the reaction, for every mole of N2 that reacts, two moles of NO2 are produced. Therefore, when 1 mole of N2 reacts, 2 moles of NO2 will form. The molar mass of NO2 is given as 46.01 g/mol. Multiplying the number of moles of NO2 by its molar mass gives:

Mass of NO2 formed = 2 moles × 46.01 g/mol = 92.02 g