Stoichiometry Review

What is the mole ratio in the following reaction:
2CO  +  O₂  → 2CO₂

• 2:1:2

• 1:1:1

• 1:2:1

• Have no clue what a mole ratios is!!

Tags

NGSS.HS-PS1-7

Given the equation:

2NaClO₃ (s) → 2NaCl (s) + 3O₂ (g)

When 2.00 moles of NaClO₃ react, how many grams of O₂ is produced?

• 56 g of O₂

• 96 g of O₂

• 64 g O₂

• 32 g O₂

Tags

NGSS.HS-PS1-7

How many grams of O₂ will be produced from 12.00 moles of NaClO₃?

• 256 g of O₂

• 576 g of O₂

• 288 g O₂

• 32 g O₂

Tags

NGSS.HS-PS1-7

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

• 0.85 g

• 290 g

• 450 g

• 870 g

How many particles are in a mole?

• 602

• 602 million

• 602 moles

• 6.02 x 10²³

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron (Fe) can be made from  6 moles H₂? 

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Tags

NGSS.HS-PS1-7

In a chemical reaction, the mass of reactants ___.

• is less than the mass of products

• is greater than the mass of products

• has no relationship to the mass of products

• is equal to the mass of products

Tags

NGSS.HS-PS1-7

What is the mole ratio between Al and Fe?

• mole Al = 2 mole Fe

• mole Al = 3 mole Fe

• 2 mole Al = 3 mole Fe

• 2 mole Al = 1 mole Fe

Tags

NGSS.HS-PS1-7

2 Al + 3 FeO 🡪 3 Fe + Al2O3

Convert 8 moles of Al to moles of Fe

• 2 mole Fe

• 3 mole Fe

• 5.33 mole Fe

• 12 mole Fe

Tags

NGSS.HS-PS1-2