Use the equation NH 3 + O 2 → NO + H 2 O to answer the following question(s).
-The number of moles of chlorine, (Cl atoms)in 12.5 g carbon tetrachloride is ________.

Question

Quizplus · Accepted Answer

The given chemical equation is not relevant to finding the number of moles of chlorine in carbon tetrachloride. However, we can use the molar mass of carbon tetrachloride (CCl4) to find the number of moles of carbon tetrachloride in 12.5 g. 
Molar mass of CCl4 = (12.01 + 4 x 35.45) g/mol = 153.82 g/mol 
Number of moles of CCl4 = 12.5 g / 153.82 g/mol = 0.0813 mol 
Each molecule of carbon tetrachloride contains 4 chlorine atoms. 
Number of moles of chlorine atoms = 4 x 0.0813 mol = 0.3252 mol 
Therefore, the number of moles of chlorine atoms in 12.5 g carbon tetrachloride is 0.325, which is closest to option C (0.325).

Use the Equation NH3 + O2 → NO + H2O

Use the Equation NH₃ + O₂ → NO + H₂O