### Chemistry Exercises: Calculating Molecules and Mass#### Calculate the **number of molecules** in each of the following samples:6. 3.04 mol of C₈H₁₈7. 0.002 mol of aspirin, C₉H₈O₄#### Calculate the **mass** of each of the following samples: 8. 17.2 mol of CO₂ 9. 0.053 mol of (NH₄)₃PO₄ **Chemistry Mole Calculations**Calculate the **number of moles** in each of the following samples:10) \(3.69 \times 10^{24}\) atoms of uranium, U11) \(7.54 \times 10^{23}\) molecules of \(H_2O\)12) 76.9 g of \(BaSO_4\)13) 146.2 g of \(C_2H_5OH\)---**Methane Production from Carbon Dioxide Reaction**Under certain circumstances, carbon dioxide, \(CO_2(g)\), can be made to react with hydrogen gas, \(H_2(g)\), to produce methane, \(CH_4(g)\), and water vapor, \(H_2O(g)\):\[ CO_2(g) + 4H_2(g) \rightarrow CH_4(g) + 2H_2O(g) \]14) How many moles of methane are produced when 71.1 moles of carbon dioxide gas react?---**Graphical Illustration**:This section contains a detailed chemical equation representing a reaction where carbon dioxide reacts with hydrogen gas to produce methane and water vapor. This balanced equation is instrumental in stoichiometric calculations.

As per rules maximum the first three questions (6,7 and 8) can be answered

Answered: Calculate the number of molecules in…

Calculate the number of molecules in each of the following samples: 6) 3.04 mol of C8H18 7) 0.002 mol of aspirin, CgHgO4 Calculate the mass of each of the following samples: 8) 17.2 mol of CO2

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

### Chemistry Exercises: Calculating Molecules and Mass

#### Calculate the **number of molecules** in each of the following samples:

6. 3.04 mol of C₈H₁₈

7. 0.002 mol of aspirin, C₉H₈O₄

#### Calculate the **mass** of each of the following samples:

8. 17.2 mol of CO₂

9. 0.053 mol of (NH₄)₃PO₄

**Chemistry Mole Calculations**

Calculate the **number of moles** in each of the following samples:

10) \(3.69 \times 10^{24}\) atoms of uranium, U

11) \(7.54 \times 10^{23}\) molecules of \(H_2O\)

12) 76.9 g of \(BaSO_4\)

13) 146.2 g of \(C_2H_5OH\)

---

**Methane Production from Carbon Dioxide Reaction**

Under certain circumstances, carbon dioxide, \(CO_2(g)\), can be made to react with hydrogen gas, \(H_2(g)\), to produce methane, \(CH_4(g)\), and water vapor, \(H_2O(g)\):

\[
CO_2(g) + 4H_2(g) \rightarrow CH_4(g) + 2H_2O(g)
\]

14) How many moles of methane are produced when 71.1 moles of carbon dioxide gas react?

---

**Graphical Illustration**:

This section contains a detailed chemical equation representing a reaction where carbon dioxide reacts with hydrogen gas to produce methane and water vapor. This balanced equation is instrumental in stoichiometric calculations.

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