Mol-Mol Stoichiometry

3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio

• 3:1:3:2

• 3:1:3:1

• 1:5:3:2

• 3:1:1:2

Tags

NGSS.HS-PS1-7

In the reaction 2 H₂ + O₂ → 2 H₂O what is the mole ratio of oxygen to water

• 1:2

• 2:1

• 3:4

• 4:3

Tags

NGSS.HS-PS1-7

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

• 4.00 mol H₂O

• 6.03 mol H₂O

• 12.4 mol H₂

• 96.0 mol H₂O

Tags

NGSS.HS-PS1-7

Knowing the mole ratio of a reactant and product in a chemical reaction would allow you to determine:

• the energy released in the reaction.

• the speed of the reaction.

• whether the reaction is reversible.

• the mass of the product produced from a known mass of reactant.

Tags

NGSS.HS-PS1-7

What is the mole ratio of H2O to H3PO4 in the following chemical equation?

• 1 to 6

• 3 to 2

• 4 to 6

• 2 to 3

Tags

NGSS.HS-PS1-7

• 1 : 3

• 2 : 3

• 1 : 1

• 3 : 2

Tags

NGSS.HS-PS1-7

For the reaction represented by the equation N_2+3H_{2 ightarrow ext{2NH}_3}, how many moles of nitrogen (N2) are required to produce 18 grams of ammonia (NH3)?

• 0.9 mol

• 18 grams

• 0.53 mol

• 36 grams

For the reaction represented by the equation Pb\left(NO_3\right)_2+2KI\ \rightarrow\ PbI_2+2KNO_3 how many moles of lead iodide \left(PbI_2\right) are produced of 300 grams potassium iodide \left(KI\right) when Pb\left(NO_3\right)_2 is in excess?

• 114.78 mol PbI₂

• 0.904 grams PbI₂

• 0.904 mol PbI₂

• 114.78 grams PbI₂

Tags

NGSS.HS-PS1-7