What is the percent of Nitrogen in N_(2)O_(7) ? The molar mass for N_(2)O_(7) is 140.02g/mol 20% 55% 100% 30%

To find the percent of nitrogen in , we need to calculate the molar nitrogen and oxygen separately, and then determine the proportion of nitrogen in the compound.Step 1: Calculate the molar mass of nitrogen.The molar mass of nitrogen (N) is 14.01 g/mol.Step 2: Calculate the molar mass of oxygen.The molar mass of oxygen (O) is 16.00 g/mol.Step 3: Calculate the molar mass of .The molar mass of is given as 140.02 g/mol.Step 4: Calculate the total mass of nitrogen in .Since there are two nitrogen atoms in , the total mass of nitrogen is 2 * 14.01 g 28.02 g/mol.Step 5: Calculate the percent of nitrogen in .Percent of nitrogen = (Total mass of nitrogen / Molar mass of ) *Percent of nitrogen = (28.02 g/mol / 140.02 g/mol) * 100Percent of nitrogen ≈ Therefore, the percent of nitrogen in is approximately 20%.