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  1. Problems
  2. /Atoms and Molecules
  3. /Stoichiometry and Concentration

Stoichiometry and Concentration

Chemistry
+ Upload a Problem
More in Atoms and MoleculesLaws of Chemical CombinationMolecules, Ions and FormulaeThe Mole ConceptMeasurement, Units and Significant FiguresStoichiometry and Concentration
12 problems
Type:
1.
Concentrated sulphuric acid is 98% H₂SO₄ by mass, and its density is 1.84 g mL⁻¹. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Hard
2.
A bottle is labelled sodium hydroxide, 3.0 M, density 1.11 g mL⁻¹. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Hard
3.
Antifreeze has ethylene glycol, C₂H₆O₂ (62 g mol⁻¹), dissolved in water. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Medium
4.
The saline drip used in hospitals has 0.9 g of sodium chloride in every 100 mL of solution. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Easy
5.
A solution with 3.40 g of silver nitrate is mixed with one holding 2.34 g of sodium chloride. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Hard
6.
In a blast furnace, carbon monoxide takes the oxygen from haematite: Fe₂O₃ + 3CO → 2Fe + 3CO₂. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Medium
7.
Kabir drops 13 g of zinc into a solution that holds 7.3 g of hydrogen chloride: Zn + 2HCl → ZnCl₂ +… New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Medium
8.
A lighter holds butane, which burns as 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O. New
High School (11–12) · Stoichiometry and Concentration, The Mole ConceptStemPy LabStemPy Lab
Easy
9.
A chemist burns 0.230 g of a liquid that holds only carbon, hydrogen and oxygen. New
High School (11–12) · Stoichiometry and Concentration, Molecules, Ions and FormulaeStemPy LabStemPy Lab
Hard
10.
A fuel gas is 82.8% carbon and 17.2% hydrogen by mass. New
High School (11–12) · Stoichiometry and Concentration, Molecules, Ions and FormulaeStemPy LabStemPy Lab
Medium
11.
Orange crystals used in the laboratory are 26.6% potassium, 35.4% chromium and 38.0% oxygen by mass. New
High School (11–12) · Stoichiometry and Concentration, Molecules, Ions and FormulaeStemPy LabStemPy Lab
Medium
12.
A farmer can buy urea, CO(NH₂)₂, ammonium nitrate, NH₄NO₃, or ammonium sulphate, (NH₄)₂SO₄. New
High School (11–12) · Stoichiometry and Concentration, Molecules, Ions and FormulaeStemPy LabStemPy Lab
Easy