Question

Which of the following has more mass (grams)?

A. 1 mole of hydrogen atoms.
B. 1 mole of helium atoms.
C. 1 mole of neon atoms.
D. 1 mole of carbon atoms.

Answer 1

1 mole of neon atoms has the most mass, with approximately 20.18 grams, compared to 1 mole of hydrogen (1.00 g), helium (4.00 g), and carbon (12.00 g).

Step-by-step explanation:

The mass in grams of 1 mole of an element can be determined by its atomic weight. Given the choice between 1 mole of hydrogen atoms, 1 mole of helium atoms, 1 mole of neon atoms, and 1 mole of carbon atoms, we can determine which has more mass (grams) by comparing their molar masses.

• Hydrogen (H) has an atomic mass of approximately 1.00 g/mol.
• Helium (He) has an atomic mass of approximately 4.00 g/mol.
• Carbon (C) has an atomic mass of approximately 12.00 g/mol.
• Neon (Ne) has an atomic mass of approximately 20.18 g/mol.

Therefore, 1 mole of neon atoms has the greatest mass, approximately 20.18 grams.