Gas Stoichiometry

Given: 4Al _(s) + 3O_{2 (g)} ---> 2Al₂O₃ (s) If you are given 10.0 g of aluminum and 10.0 g of oxygen gas, how many moles of aluminum oxide are produced?

• 0.208 mol

• 0.185 mol

• 0.371 mol

• 0.313 mol

Tags

NGSS.HS-PS1-7

Given: 3F_{2 (g)} + 2FeCl_{3 (aq)} - - > 2FeF_{3 (s)} + 3Cl_{2 (g)}

195 L of fluorine gas will produce how many moles of iron III chloride?

• 0.115 mol

• 8.71 mol

• 0.172 mol

• 5.80 mol

Tags

NGSS.HS-PS1-7

How many moles of hydrogen gas are needed to react completely with 2.0 moles of nitrogen gas? What is the mole ratio of hydrogen gas to nitrogen gas?

• 1:3

• 3:1

• 1:2

• 2:1

In the reaction
2 H₂ + O₂ → 2 H₂O
what is the mole ratio of oxygen to water

• 1:2

• 2:1

• 3:4

• 4:3

What are the coefficients if this following equation was balanced? Al + O₂ --> Al₂O₃

• 2, 3, 1

• 3, 2, 1

• 1, 2, 3

• 4, 3, 2

Tags

NGSS.MS-PS1-5

What are the coefficients if the following equation was balanced? _?_ C₄H₁₀ + _?_ O_{2 -->} _?_ CO₂ + _?_ H₂O

• 2, 5, 6, 2

• 2, 13, 8, 10

• 2, 7, 4, 10

Tags

NGSS.MS-PS1-5

Select the correct molar ratio taken from this balanced equation:

4 Al + 3 O₂ --> 2 Al₂O₃

• 1 mol Al = 1 mol Al₂O₃

• 4 Al = 2 Al₂O₃

• 4 mol Al = 2 mol Al₂O₃

• 4 mol Al = 2 mol Al

Tags

NGSS.HS-PS1-7

Given the balanced equation representing a reaction: CaO(s) + CO₂(g) → CaCO₃(s) + heat What is the total mass of CaO(s) that reacts completely with 88 grams of CO₂(g) to produce 200 grams of CaCO₃(s)?

• 56 g

• 88 g

• 112 g

• 288 g

Tags

NGSS.HS-PS1-7

Given the balanced equation representing a reaction: 2H₂ + O₂ → 2H₂O What is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of oxygen?

• 18 g

• 36 g

• 56 g

• 72 g

Tags

NGSS.HS-PS1-7

Given the reaction: Mg + H₂SO₄ → MgSO₄ + H₂ How many grams of H₂SO₄ are needed to produce exactly 11.2 liters of H₂, measured at STP? (Hint:@ STP 1 mol of any gas occupies 22.4 L)

• 24.5

• 49.0

• 98.0

• 196