Heat Stoichiometry

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 reaction: 2 H₂ + O₂ → 2 H₂O The total number of grams of O₂ needed to produce 3 moles of water is

• 36

• 48

• 61

• 75

Tags

NGSS.HS-PS1-7

Given the reaction: 2 C₈H₁₈(g) + 25 O₂(g) → 16 CO₂(g) + 18 H₂O(g) What mass of C₈H₁₈(g) will completely react to produce exactly 1.6 moles of H₂O(g)?

• 137 grams

• 10.2 grams

• 183 grams

• 20.3 grams

Tags

NGSS.HS-PS1-7

Given the balanced equation: C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(g) What is the total number of liters of CO₂(g) produced when 20.0 liters of O₂(g) are completely consumed? (Hint:@ STP 1 mol of any gas occupies 22.4 L)

• 12.0 L

• 22.4 L

• 3.00 L

• 5.00 L

___ is the study of the numerical relationships between products and reactants in a chemical reaction.

Tags

NGSS.HS-PS1-7

What is the simplified mole ratio of the octane to carbon dioxide. (Write your ratio using the format A:B, where A and B are your numbers)

Tags

NGSS.HS-PS1-4

Tags

NGSS.HS-PS1-4

Given the reaction: @@ ext{C}_3 ext{H}_8 + 5 ext{O}_2 ightarrow 3 ext{CO}_2 + 4 ext{H}_2 ext{O} + ext{heat}@@, how much heat is released when 44 grams of propane (C₃H₈) is completely combusted?

• 500 kJ

• 1000 kJ

• 2000 kJ

• 3000 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

In the reaction: @@ ext{2H}_2 + ext{O}_2 ightarrow 2 ext{H}_2 ext{O} + ext{heat}@@, if 4 moles of hydrogen gas are used, how many moles of water are produced?

• 2 moles

• 4 moles

• 6 moles

• 8 moles

Tags

NGSS.MS-PS1-5