Question

Calculate the number of moles of oxygen atoms in 35.2 grams of oxygen.

A. 2.20 moles
B. 4.42 moles
C. 0.54 moles
D. 2.57 moles
E. 1.13 moles

Answer 1

To calculate the number of moles of oxygen atoms in 35.2 grams of oxygen, divide the mass by the molar mass of oxygen. The result is 2.2 moles. Correct option is A.

Step-by-step explanation:

To calculate the number of moles of oxygen atoms in 35.2 grams of oxygen, we need to use the molar mass of oxygen. The molar mass of oxygen is 16 g/mol. We can use the formula:

Moles = Mass / Molar mass

So, Moles = 35.2 g / 16 g/mol = 2.2 moles

Therefore, the correct answer is A. 2.20 moles.