What mass of ammonia,NH₃,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl₃F? A)0.0412 g B)0.371 g C)2.69 g D)24.2 g

Question

Quizplus · Accepted Answer

To find the mass of ammonia that contains the same number of molecules as 3.00 g of trichlorofluoromethane (CCl3F), we use the concept of moles, since the number of moles is directly proportional to the number of molecules. First, calculate the molar mass of CCl3F: C (12.01 g/mol) + 3Cl (3*35.45 g/mol) + F (19.00 g/mol) = 137.36 g/mol. Then, find how many moles 3.00 g of CCl3F is: 3.00 g / 137.36 g/mol = 0.02185 moles. Since we want the same number of molecules of NH3, we multiply this mole number by the molar mass of NH3: N (14.01 g/mol) + 3H (3*1.008 g/mol) = 17.034 g/mol. So, the mass of NH3 is 0.02185 moles * 17.034 g/mol = 0.372 g, which rounds to 0.371 g.

What Mass of Ammonia,N H3,contains the Same Number of Molecules

What Mass of Ammonia,NH₃,contains the Same Number of Molecules