Writing Skeleton Equations

"When heated, solid mercury(II) oxide decomposes into mercury liquid and oxygen gas." What is/are the reactant(s)?

• mercury(II) oxide

• mercury liquid

• oxygen gas

"When heated, solid mercury(II) oxide decomposes into mercury liquid and oxygen gas." What is/are the product(s)?

• mercury(II) oxide

• mercury liquid

• oxygen gas

"When heated, solid mercury(II) oxide decomposes into mercury liquid and oxygen gas." What is the correct formula and physical state for mercury(II) oxide?

• Hg₂O (s)

• HgO (l)

• HgO (s)

Tags

NGSS.HS-PS1-1

"When heated, solid mercury(II) oxide decomposes into mercury liquid and oxygen gas." What is the correct formula and physical state for the mercury and oxygen products?

• Hg (l) + O₂ (g)

• Hg (s) + O₂ (g)

• Hg₂ (l) + O (g)

• Hg (l) + O (g)

Tags

NGSS.HS-PS1-1

"When heated, solid mercury(II) oxide decomposes into mercury liquid and oxygen gas." What is the correct skelton equation for this reaction?

• Hg (l) + O₂ (g) --> Hg₂O (s)

• Hg₂O (s) --> Hg (l) + O (g)

• HgO (s) --> Hg (l) + O₂ (g)

Tags

NGSS.HS-PS1-2

"Water and sulfur trioxide vapor combine to form sulfuric acid (or hydrogen sulfate solution)." What is/are the reactant(s)?

• water

• sulfur

• sulfur trioxide

• hydrogen sulfate

Tags

NGSS.HS-PS1-1

"Water and sulfur trioxide vapor combine to form sulfuric acid (or hydrogen sulfate solution)." What is/are the product(s)?

• water

• sulfur

• sulfur trioxide

• hydrogen sulfate

"Water and sulfur trioxide vapor combine to form sulfuric acid (or hydrogen sulfate solution)." What is the correct formula and physical state for sulfur trioxide?

• S₃O (g)

• SO₃ (g)

• SO₃ (v)

"Water and sulfur trioxide vapor combine to form sulfuric acid (or hydrogen sulfate solution)." What is the correct formula and physical state for hydrogen sulfate?

• H₂SO₄ (s)

• H₂SO₄ (aq)

• HSO₄ (s)

• HSO₄ (aq)

Tags

NGSS.HS-PS1-7

"Water and sulfur trioxide vapor combine to form sulfuric acid (or hydrogen sulfate solution)." Which is the correct skeleton equation?

• H₂SO₄ (s) --> H₂O (l) + S₃O (g)

• H₂O (aq) + SO₃ (g) --> H₂SO₄ (s)

• H₂O (l) + S₃O (v) --> H₂SO₄ (aq)

• H₂O (l) + SO₃ (g) --> H₂SO₄ (aq)

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7