Moles, Grams, Atoms

How many atoms would be contained in 454 grams of iron (Fe)?

• 6.02 x 10²³ atoms
• 8.14 atoms
• 4.90 x 10²⁴ atoms

Find the mass in grams of 0.75 moles of magnesium (Mg).

• 32 grams
• 18 grams
• 2.21 x 10²³ grams

Calculate the moles in 25.0 grams of nitrogen (N).

• 1.79 moles
• 350 moles
• 1 mole

How many atoms are in 1 mole?

• 6.02 x 10²³ atoms
• 1 atom
• It varies.

Find the mass in grams of 2.25 x 10²⁴ atoms of calcium (Ca).

• 40.0 grams
• 255.1 grams
• 15.0 grams

The molar mass of an element is equal to its...

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

The mass of one mole of substance is called...

• molecular mass
• mole constant
• molar mass
• atomic weight

What is the molar mass of sodium?

• 11
• 23
• 45.98
• 3

What is the mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol