Stoichiometry Particles to Particles

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation

• Panic

• Write an Unbalanced Equation

• Ask for help

Tags

NGSS.HS-PS1-7

For the Balanced Reaction: 2 CO (g) + O₂(g) → 2 CO₂ (g); What is the ratio of moles of CO to moles O₂?

• 3 mol CO / 2 mol O₂

• 2 mol CO / 1 mol O₂

• 3 mol CO / 1 mol O₂

• 2 mol CO / 2 mol O₂

N₂ + 3H₂ → 2NH₃

How many moles of NH₃ are needed to react with 2 moles of nitrogen?

• 4

• 2

• 3

• 1

Tags

NGSS.HS-PS1-7

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

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

• 5.2 g
• 2.6 g
• 690 g
• 45 g

2 CO (g) + O₂(g) → 2 CO₂ (g)

In the formation of CO₂ from CO and oxygen, how many Liters of CO₂ are produced by the reaction of 8 mols of O₂ with an excess of carbon monoxide?

• 0.178 L

• 358.4 Liters

• 704 grams

• 0.36 grams

Tags

NGSS.HS-PS1-7

2CO  +  O₂  −-> 2CO₂
How many liters of carbon dioxide are produced from 10L of carbon monoxide?

• 10
• 20
• 1
• 5

How many liters of NH₃ are needed to react completely with 30.0L of NO?
4NH₃+6NO --> 5N₂ + 6H₂O

• 5.0 L
• 20.0 L
• 7.5 L
• 120.0 L

What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium with excess water according to the following reaction?

1Mg + 2H₂O --> Mg(OH)₂ + H₂

• 62L

• 65L

• 31L

• 124L

1. What mass of aluminum hydroxide are needed to decompose in order to produce 65.0 L of water at STP according to the following equation?

2Al(OH)₃ → 1Al₂O₃ + 3H₂O

• 151 g

• 20 g

• 302 g

• 197 g

Tags

NGSS.HS-PS1-7