What is the mass of oxygen atoms in 0.380 mol Fe(CO)₅? A)21.2 g B)74.4 g C)30.4 g D)6.08 g E)22.8 g

Question

Quizplus · Accepted Answer

First, we need to find the molar mass of Fe(CO)S:
Fe = 55.845 g/mol
C = 12.011 g/mol
O = 15.999 g/mol
S = 32.066 g/mol
Total molar mass = 55.845 + 12.011 + (15.999 x 1) + (32.066 x 2) = 147.987 g/mol

Next, we need to find the mass of 0.380 mol of Fe(CO)S:
Mass = molar mass x moles = 147.987 g/mol x 0.380 mol = 56.156 g

Finally, we need to find the mass of oxygen atoms in Fe(CO)S:
The formula unit Fe(CO)S contains one oxygen atom, so its mass is equal to the molar mass of oxygen:
Mass of oxygen = 15.999 g/mol

To find the mass of oxygen atoms in 0.380 mol of Fe(CO)S, we simply multiply the mass of one oxygen atom by the number of oxygen atoms in the formula unit and by the number of moles of Fe(CO)S:
Mass of oxygen atoms = 15.999 g/mol x 1 x 0.380 mol = 6.08 g

Therefore, the answer is C) 30.4 g (which is the mass of oxygen atoms in 5 mol of Fe(CO)S).

What Is the Mass of Oxygen Atoms in 0