Molecular Wt. and Moles

What is a mole?

• 6.022 x 10²³ particles of any substance

• A small burrowing animal

• A dark spot on your skin

• A spy

Which of these elements has the highest molar mass?

• Hydrogen

• Iron

• Carbonate

• Cobalt

In chemistry, a "mole" is:

• The mass of an atom
• a large number used to count particles
• based on the volume of a substance

The number 6.02 x 10²³ is called...

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

What is the molar mass of NaCl?

• 58.45g/mol
• 28g/mol
• 12g/mol
• 6.02 x 10²³

Which has more molecules?

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

Tags

NGSS.MS-PS1-1

What is the Molar mass of one mole of Iron (Fe)?

• 55.93 amu
• 55.93 g
• 111.86 amu
• 111.86 g

What is the molar mass of Carbon Dioxide (CO₂)?

• 12 amu
• 12 g
• 44 g
• 44 amu

What is the molar mass of Mg₃N₂?

• 191.6 g/mol
• 76.64 g/mol
• 38.32 g/mol
• 100.95 g/mol

How many liters are in one mole of H₂O?

• 18

• 22.4

• 6.022 x 10²³

• None of these