Mole to Mole

6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂ 
What is the total number of moles of water needed to make 2.5 moles of C₆H₁₂O₆?

• 2.5

• 6

• 12

• 15

Tags

NGSS.HS-PS1-2

How many moles of KCl are used when 6.7 moles of KClO₃ decompose completely?

• 6.7 mol

• 1.0 mol

• 10.1 mol

• 4.5 mol

What is stoichiometry?

• study of numbers of hydrocarbons in a reaction

• study of numbers/ratios between reactants and products in a chemical reaction

• study of amount of reactions something can do

• a magical spell from Harry Potter

Tags

NGSS.HS-PS1-7

How many moles of Fe is needed to react with 9.75 moles of O₂?

• 3

• 4

• 13

• 39

Tags

NGSS.HS-PS1-7

How many moles of CO₂ is produced when 17.5 moles of O₂ reacts fully?

• 4

• 7

• 10

• 30.63

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

I use mole ratio (coefficients) from balanced chemical equation as a conversion factor to convert amounts of moles of one compound to another.

• True

• False

Tags

NGSS.HS-PS1-7

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

How many moles of hydrogen gas are needed to react completely with 2.0 moles of nitrogen gas? What is the mole ratio of hydrogen gas to nitrogen gas?

• 1:3

• 3:1

• 1:2

• 2:1

Mole ratios are obtained from the

• balanced chemical equation

• periodic table

• molar mass

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the ratio of moles of MgO to moles Fe?

• 3mol Mg / 2 mol Fe

• 2 mol Mg/ 3 mol Fe

• 1 mol Fe/ 2 mol Fe

• 3 mol MgO / 2 mol Fe