Mole to Mole Ratios

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles

• 8 moles

• 16 moles

• 2 moles

Tags

NGSS.HS-PS1-7

How are mole ratios used in chemical calculations?

• to convert between moles of different substances

• to convert between mass units of the same substance

• to convert from mass to volume of different substances

How many moles of iron are needed to react with oxygen to produce 2 moles of iron(III) oxide in this equation?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

What is the mole ratio of oxygen to iron(III) oxide?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-7

How many moles of phosphine (PH₃) are produced when 1 mole of phosphorus reacts with 6 moles of hydrogen?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

What is the mole ratio of phosphorus to hydrogen?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-7

What part of a balanced chemical equation gives information about the number of moles?

• the subscripts

• the chemical symbol

• the mass

• the coefficients

Tags

NGSS.HS-PS1-7

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?   P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

• 6:4

• 4:6

• 1:3

• 3:1

Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)

• 1,2,2,2

• 1,2,1,1

• 2,1,1,1

• 2,1,2,1

Tags

NGSS.HS-PS1-7

In the equation 2 Al₂O₃ --> 4 Al + 3 O₂, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?

• 10/6

• 3/4

• 4/3

• 2/3

Tags

NGSS.HS-PS1-7