Mole to Mole Gram to Gram Remediation

How many moles of of oxygen (O₂) are produced when 8.56 moles of potassium chlorate

K(ClO₃) decomposes completely.

2K(ClO₃) -----> 2KCl + 3O₂

• 4.28 moles of O₂

• 8.56 moles of O₂

• 12.84 moles of O₂

• 25.68 moles of O₂

Use the balanced equation to answer the following question.

2K + Cl₂ -----> 2KCl

How many grams of potassium chloride (KCl) will be produced from 4.50 g of Potassium (K)?

• 8.58 g KCl

• .12 g KCl

• .230 g KCl

• 4.5 g KCl

Tags

NGSS.HS-PS1-7

Use the balanced equation to answer the following question. How many moles of CO₂ are produced when 88.62 moles of O₂ are used?

2C₄H₁₀ + 13O₂ ----> 8CO₂ + 10H₂O

• 88.62 moles of CO₂

• 708.96 moles of CO₂

• 8 moles of CO₂

• 54.54 moles of CO₂

Use the balanced equation to answer the following question.

2Al + 3Fe(SO₄) -----> 3Fe + Al₂(SO₄)₃

How many grams of Iron (Fe) would be formed from 45 g of iron(II) Sulfate [ Fe(SO₄) ] ?

• .29 g Fe

• 16.54 g Fe

• 45 g Fe

• .88 g Fe

Tags

NGSS.HS-PS1-7

Use the balanced equation to answer the following question. How many moles of water (H₂O) are needed when 10 moles of C₄H₁₀ are used?

2C₄H₁₀ + 13O₂ ----> 8CO₂ + 10H₂O

• 10 moles of H₂O

• 50 moles of H₂O

• 100 moles of H₂O

• 2 moles of H₂O

Use the balanced equation to answer the following question.

2Cu + Zn(NO₃)₂ -----> Zn + 2Cu(NO₃)

How many grams of zinc (Zn) will be formed if 44.0 g of Copper (Cu) reacts with Zinc Nitrate [Zn(NO₃)₂] ?

• .50 g Zn

• .25 g Zn

• 44.0 g Zn

• 16.46 g Zn

Tags

NGSS.HS-PS1-7

Use the balanced equation to answer the following question. How many moles of potassium oxide (K₂O) will be formed when 2.52 moles of potassium (K) reacts with oxygen?

4K + O₂ ----> 2K₂O

• 2 moles of K₂O

• 5.04 moles of K₂O

• 1.26 moles of K₂O

• 4 moles of K₂O

Tags

NGSS.HS-PS1-7

Use the balanced equation to answer the following question.

C + 2H₂ -----> CH₄

How many grams of Methane (CH₄) will be produced from 75.0g of hydrogen (H₂)?

• 37.13 g CH₄

• 18.56 g CH₄

• 297.95 g CH₄

• 75.0 g CH₄

Tags

NGSS.HS-PS1-7

Use the balanced equation to answer the following question. Given 22 moles Iron (Fe), how many grams of Iron oxide (Fe₂O₃) will be produced?

4Fe + 3O₂ ----> 2Fe₂O₃

• 3645.4 grams of Fe₂O₃

• 165.7 grams of Fe₂O₃

• 1756.7 grams of Fe₂O₃

• 1822.7 grams of Fe₂O₃

Tags

NGSS.HS-PS1-7

What is the mole ratio of Sodium (Na) to Sodium Sulfate

[ Na₂(SO₄) ] in the following equation?

2Na + H₂(SO₄) ---> Na₂(SO₄) + H₂

• H₂ : H₂(SO₄)

• 2Na : Na₂(SO₄)

• Na₂(SO₄) : H₂

• Na₂(SO₄) : H₂(SO₄)