Z's Stoich Quiz

How many moles of calcium nitrate would react with 4.55 moles of Chromium (III) sulfate to produce calcium sulfate and chromium(III) nitrate?

• 1.37 moles of calcium nitrate

• 13.65 moles of calcium nitrate

• 13.7 moles of calcium nitrate

• 13.70 moles of calcium nitrate

What mass of Gallium chloride would react with excess fluorine to produce 78.9 g of chlorine? Gallium fluoride is the other product.

• 261 g gallium chloride

• 131 g gallium chloride

• 294 g gallium chloride

• 392 g gallium chloride

What volume of nitrogen gas at STP would react with 37.25 g of magnesium to produce magnesium nitride?

• 11.45 L N₂

• 22.89 L N₂

• 34.34 L N₂

• 17.21 L N₂

Determine the mass of calcium hydroxide produced when calcium carbide reacts with 0.64g of water according ot the following equation

CaC₂ + 2H₂O --> Ca(OH)₂ + C₂H₂

• 1.5 g Ca(OH)₂

• 1.2 g Ca(OH)₂

• 1.3 g Ca(OH)₂

• 1.4 g Ca(OH)₂

Determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with water according to the following unbalanced equation.

____ Li₃N + ____ H₂O --> ____ NH₃ + ____ LiOH

• 0.79 g LiOH

• 0.78 g LiOH

• 0.77 g LiOH

• 0.76 g LiOH

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation
• Panic
• Write an Unbalanced Equation
• Avogadro's Number

Tags

NGSS.HS-PS1-7

____NaClO₃ (s) → ____NaCl (s) + ____O₂ (g)

12.0 moles of NaClO₃ will produce how many grams of O₂ in the unbalanced equation above?

• 256 g of O₂

• 576 g of O₂

• 288 g O₂

What is the limiting reactant?

• CH₄

• H₂O

• CO

• H₂

Consider the reaction between NO(g) and O2(g)

represented below. What is the balanced equation for this reaction?

• 2NO + 2O₂ → 2NO₂ + 2O₂

• 2NO + 4O₂ → 2NO₂ + 2O₂

• NO + O₂ → NO₂

• 2NO + 2O₂ → 2NO₂ + O₂

Hydrogen and carbon monoxide react to form methanol, CH_3OH. If 112 g CO(g) reacts with 80.0 g H₂(g) to

form 120 g CH₃OH, what is the percent yield?

• 84%

• 74%

• 104%

• 94%