Mole

Mole Ratios used for conversions are derived from:

• the molar mass of the reactants in the balanced chemical equation

• the coefficients of the balanced chemical equation

• the subscripts of the products in the balanced chemical equation

• the group number of each element in the balanced chemical equation

Tags

NGSS.HS-PS1-7

2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Ethane (C₂H₆) combusts in the above reaction. What is the mole ratio of ethane to oxygen gas?

• 
• 
• 
• 

2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Ethane (C₂H₆) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?

• 
• 
• 
• 

In the equation 2 Al₂O₃ → 4 Al + 3 O₂, what is the mole ratio of aluminum to oxygen?

• 10:6 

• 3:4

• 4:3

• 2:3

Tags

NGSS.HS-PS1-7

Avogadro's number of particles is equal to one_____.

• kilogram

• gram

• kelvin

• mole

Tags

NGSS.HS-PS1-7

Avogadro's number of representative particles is equal to one_____

• kilogram

• gram

• kelvin

• mole

Tags

NGSS.HS-PS1-7

Avogadro's number of atoms is equal to one_____ of atoms.

• kilogram

• gram

• kelvin

• mole

• 0.5 moles

• 0.86 moles

• 1 mole

• 1.5 moles

Tags

DOK Level 2: Skill/Concept

What is this number called?

• Avocado's Number

• Avogadro's Number

• Mendeleev's Number

• The mole

How many atoms are in 2 moles of helium (He)?