Mole review #2

(0901) Avogadro’s number is:

• 6.02 x 10²²

• 6

• 6.02 x 10²³

• 3.01 x 10²³

(0902) The mass of one mole of substance is called...

• molecular mass

• mole constant

• molar mass

• atomic weight

(0902) What is the molar mass of carbon dioxide?

• 12.40 g/mol

• 16.55 g/mol

• 32.21 g/mol

• 44.01 g/mol

(0902) Which compound has the smallest molar mass?

• CO

• CO₂

• H₂O

• H₂O₂

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

How many atoms are in 1 mole of NaCl? 

• 6.02 x 10²³
• 58 
• 11
• 17

Tags

NGSS.HS-PS1-7

How many moles are in 32 grams of Oxygen (O)? 

• 3
• 2
• 1
• 4

Tags

NGSS.HS-PS1-7

Why is the mole used to measure the atom?

• Atoms are extremely tiny particles, and their size varies from element to element

• Atoms are all the same size for every element

• Some atoms cannot be counted using the mole

• Tu eres loco, Senior Hagerman.

The mole is a...

• Unit to measure the amount of atoms in a substance

• Unit to measure distance

• Unit to measure time of atomic decay

• Unit used to measure the size of each atom in a substance

Which has more molecules?

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