Stoichiometry Test

How many grams of ammonia (NH_3) are produced when 10.0 mole of nitrogen reacts?

• 340g NH₃

• 85g NH₃

• 170g NH₃

• 10mol NH₃

Tags

NGSS.HS-PS1-7

In this reaction, Fe₂O₃ + 3 CO → 2 Fe + 3 CO₂, what is the total number of moles of CO used to produce 28 grams of iron?

• 0.75 mol CO

• 1.5 mol CO

• 0.35 mol CO

• 0.5mol CO

Tags

NGSS.HS-PS1-7

What total mass of iron is necessary to produce 10.00 mole of copper?

• 560g Fe

• 56 g Fe

• 635.5g Fe

• 63.6g Fe

Tags

NGSS.HS-PS1-7

What is the mole ratio of O₂ consumed to water produced?

• 1:2

• 2:1

• 2:2

Tags

NGSS.HS-PS1-7

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

• 6.7 mol

• 1.0 mol

• 10.1 mol

• 4.5 mol

Tags

NGSS.HS-PS1-7

What is the total number of moles of NH₃( g) produced when 6 moles of H₂ (g) reacts completely with N₂( g)?

• 4 mol NH₃

• 9 mol NH₃

• 12 mol NH₃

• 6 mol NH₃

Tags

NGSS.HS-PS1-7

What is the total number of grams of O₂( g) needed to react completely with 4.0 mole of C₂H₂( g)?

• 320g O₂

• 160g O₂

• 25.6g O₂

• 12.8g O₂

Tags

NGSS.HS-PS1-7

What mass of Iron (III) Oxide must be used to produce 7 grams of Iron?

• 10g Fe₂O₃

• 40g Fe₂O₃

• 7g Fe₂O₃

• 160g Fe₂O₃

Tags

NGSS.HS-PS1-7

Hydrochloric acid (HCl) breaks down into hydrogen gas and chlorine gas according to the reaction: 2 HCl → Cl ₂ + H ₂ If 18.22 grams of HCl reacts, what is the theoretical yield of hydrogen gas produced?

• 5g H₂

• 0.5g H₂

• 2g H₂

Tags

NGSS.HS-PS1-7

In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield?

• 82%

• 0.82%

• 10.1 %

• 100%

Tags

NGSS.HS-PS1-7