What percentage of the total atomic mass of calcium nitrate (Ca(NO_(3))_(2)) is composed of nitrogen?? Hint - another way to think of calcium nitrate is Ca(NO_(3)) (NO_(3)) 29% 17% 24% 59%

To find the percentage of the total atomic mass of calcium nitrate (Ca(NO3)2) that is composed of nitrogen, we need to calculate the molar mass of calcium nitrate and then determine the proportion of nitrogen in it.<br /><br />Step 1: Calculate the molar mass of calcium nitrate (Ca(NO3)2).<br />The molar mass of calcium nitrate is the sum of the molar masses of calcium (Ca), nitrogen (N), and oxygen (O).<br /><br />Molar mass of Ca = 40.08 g/mol<br />Molar mass of N = 14.01 g/mol<br />Molar mass of O = 16.00 g/mol<br /><br />Molar mass of Ca(NO3)2 = (1 x 40.08 g/mol) + (2 x (1 x 14.01 g/mol + 3 x 16.00 g/mol))<br />Molar mass of Ca(NO3)2 = 164.10 g/mol<br /><br />Step 2: Calculate the total mass of nitrogen in calcium nitrate.<br />Since there are two nitrate (NO3) groups in calcium nitrate, we need to multiply the molar mass of nitrogen by 2.<br /><br />Total mass of nitrogen = 2 x 14.01 g/mol = 28.02 g/mol<br /><br />Step 3: Calculate the percentage of the total atomic mass of calcium nitrate that is composed of nitrogen.<br />Percentage of nitrogen = (Total mass of nitrogen / Molar mass of Ca(NO3)2) x 100%<br />Percentage of nitrogen = (28.02 g/mol / 164.10 g/mol) x 100%<br />Percentage of nitrogen ≈ 17.07%<br /><br />Therefore, the percentage of the total atomic mass of calcium nitrate (Ca(NO3)2) that is composed of nitrogen is approximately 17%.