What has the same mass as 0.25 mol of copper atoms?
A. 0.5 mol of oxygen molecules
B. 1 mol of sulphur dioxide molecules
C. 1.5 mol of water molecules
D. 2 mol of oxygen atoms
Answer (2)
The substance that has the same mass as 0.25 mol of copper atoms, which is approximately 15.89 g, is 0.5 mol of oxygen molecules, with a mass of 16.00 g. Thus, the answer is A. 0.5 mol of oxygen molecules.
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