Stoichiometry Concepts Practice

Mg + H₂SO_{4 →} MgSO_{4 +} H₂ In this reaction, What is the mass of magnesium sulfate formed when 6g of magnesium react with excess sulfuric acid.

• 8

• 24

• 30

• 60

Tags

NGSS.HS-PS1-7

Which two of the following contain the same number of molecules?

• 2.0g of Methane, CH₄

• 8.0g of Oxygen, O₂

• 2.0g of Ozone, O₃

• 8.0g of Sulfur dioxide, SO₂

Tags

NGSS.HS-PS1-7

4.8g of calcium is added to 3.6g of Water. The following reaction occurs.

Ca + 2H₂O → Ca(OH)_{2 +} H₂

What Reagent is in excess?

• Calcium

• Water

Tags

NGSS.HS-PS1-7

In the same reaction where 4.8g of calcium is added to 3.6g of Water. Ca + 2H2O → Ca(OH)2 + H2 What is the mass of the excess reagent that remained at the end of the experiment

• 8g

• 0.08g

• 0.8g

• 88g

Tags

NGSS.HS-PS1-7

• 0.5 moles

• 1 mole

• 2 moles

• 0.25 moles

• 1 mole

• 2 moles

• 4 moles

• 8 moles

Tags

SCH3U.D.2.5

Which of the following best describes the mole concept?

• A measure of mass

• A measure of volume

• A measure of the amount of substance

• A measure of temperature

Tags

DOK Level 1: Recall

• 0.5 moles

• 1 mole

• 2 moles

• 3 moles

Tags

DOK Level 2: Skill/Concept

• 22 g

• 44 g

• 66 g

• 88 g

Tags

SCH3U.D.2.5

Ethanol is manufactured from Glucose C₆H₁₂O₆ by fermentation C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ In an experiment, 30.0g of glucose was fermented. What is the number of moles of glucose in 30.0g

• 0.157

• 0.167

• 0.186

• 0.159

Tags

NGSS.HS-PS1-7