Molar mass and conversions

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

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

If you have 1 mole of iron and one mole of gold, which has more atoms?

• Iron

• Gold

• They have the same amount

If you have one mole of iron and one mole of gold, which one weighs the most?

• Iron

• Gold

• They weigh the same amount

If you have 100g of iron and 100g of gold, which one has the most atoms?

• Iron

• Gold

• They have the same amount

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

What is the molar mass of CO₂?

• 12
• 16
• 32
• 44

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

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

• 6.02x10²³ atoms
• 8.14 atoms
• 4.90x10²⁴ atoms
• 55.85x10²³ atoms

5.11 x 10²³ atoms of lithium (Li) is equal to how many moles?

• 1.18 moles

• 0.351 moles

• 1.34 moles

• 0.849 moles

What is the mass of one mole of potassium (K)?

• 19 grams

• 39.10 grams

• 30.97 grams

• 38 grams