Day #7 Mols, Mass, and Particles

What is the molar mass of Al₂S₃?

• 150.17 g/mol

• 59.05 g/mol

• 138.23 g/mol

• 75.27 g/mol

Which of the following statements regarding the mole is INCORRECT?

• A mole is a unit of quantity equal to 6.02 x 10²³ particles.

• The number of particles in a mole is known as Avogadro’s number.

• A mole of particles of an element is numerically equal to the atomic mass of the element.

• none of the above

The mass of one mole of an element is equal to

• its atomic number from the periodic table, but in amus.

• its atomic mass from the periodic table, but in amus.

• its atomic mass from the periodic table, but in grams.

• its atomic number from the periodic table, but in grams.

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 mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

How many atoms of iodine are in a mole of iodine?

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

The number 6.02 x 10²³ is called...

• Obama's number
• Bohr's number
• Trump's number
• Avogadro's number

Which has more molecules?

• 1 mole H₂O
• 1 mole Al(OH)₃
• 1 mole NaCl
• There are all the same

How can you figure out how particles (atoms) there are in 2 moles?

• 2
• 2 x (6.02 x 10²³)
• 2 x (atomic mass)
• 2 ÷ (6.02 x 10²³)

There are ______ number of molecules (atoms) of NaCl in one mole of NaCl?

• 6.02 x 10²³
• 1 mole
• 2
• Mr. Miller