Stoichiometry and Limiting Reactants Quiz

What is the mass of 2 moles of carbon dioxide (CO2)?

• 22 grams

• 44 grams

• 88 grams

• 176 grams

How many moles are there in 25 grams of water (H2O)?

• 0.5

• 2.5

• 3.5

• 1.3889

In the reaction: 2H2 + O2 -> 2H2O, if 4 moles of H2 and 2 moles of O2 are reacted, what is the limiting reactant?

• O2

• H2O2

• H2O

• H2

Calculate the percent yield if the actual yield is 50 grams and the theoretical yield is 60 grams.

• 83.33%

• 66.67%

• 90%

• 75%

How many grams of sodium chloride (NaCl) are produced when 5 moles of sodium (Na) react with excess chlorine (Cl2)?

• 29.22 grams

• 58.44 grams

• 116.88 grams

• 146.1 grams

Tags

NGSS.HS-PS1-7

In the reaction: 2H2 + O2 -> 2H2O, if 3 moles of H2 and 4 moles of O2 are reacted, what is the limiting reactant?

• H2O

• H2 + O2

• H2

• O2

Tags

NGSS.HS-PS1-7

Calculate the mass of carbon dioxide (CO2) produced when 10 grams of methane (CH4) reacts with excess oxygen (O2).

• 20 grams

• 25 grams

• 27.5 grams

• 15 grams

Tags

NGSS.HS-PS1-7

How many moles of oxygen (O2) are needed to react completely with 8 grams of hydrogen (H2) in the reaction: 2H2 + O2 -> 2H2O?

• 2

• 1

• 4

• 3

Tags

NGSS.HS-PS1-7

In the reaction: 2H2 + O2 -> 2H2O, if 6 moles of H2 and 3 moles of O2 are reacted, what is the limiting reactant?

• H2

• H2O

• 2H2O

• O2

Calculate the percent yield if the actual yield is 80 grams and the theoretical yield is 100 grams.

• 60%

• 90%

• 80%

• 75%