TNT,or trinitrotoluene,has the chemical formula C₇H₅N₃O₆.How many grams of nitrogen are present in 25 grams TNT (227.13 g/mol)?

Question

Quizplus · Accepted Answer

The chemical formula of TNT contains 3 nitrogen atoms. To calculate the amount of nitrogen in 25 grams of TNT, we can use the following calculation:

- Calculate the number of moles of TNT: 25 g / 227.13 g/mol = 0.11 mol TNT
- Calculate the number of moles of nitrogen: 0.11 mol TNT x 3 mol N/mol TNT = 0.33 mol N
- Calculate the mass of nitrogen: 0.33 mol N x 14.01 g/mol = 4.6 g N

Therefore, there are 4.6 grams of nitrogen present in 25 grams of TNT. The best choice is D.

TNT,or Trinitrotoluene,has the Chemical Formula C7H5N3O6

TNT,or Trinitrotoluene,has the Chemical Formula C₇H₅N₃O₆