1. Determine the molar mass of (a) MgSO₄ (b) (NH₄)₂CO₄2. What is the percentage of Ca in CaSO₄?3. How many moles of (a) CO₂ in 132g of CO₂ (b) moles of O₂ in 128g O₂ 4. What is the empirical formula of (a) Glucose, C₆H₁₂O₆ and Cyclohexane, C₆H₁₂5. How do you detect the presence of: (a) NH₄⁺ ion (b) CO₃²⁻ ion (c) SO₄²⁻ ion6. Zn is 65.4g/mol. What is the number of atoms for 0.2g of Zn using Avogadro’s number?7. Consider the combustion reaction of methane, CH₄. If 2.1 mol of methane is allowed to react with 4.0 mol of oxygen, which is the limiting reagent?8. Ethane, C₂H₆, reacts with O₂ to give CO₂ and H₂O. If 5 mols of ethane are placed with 16 mols of O₂, how many mols of CO₂ will be produced?

The objective of the question is to calculate the molar mass of

1. Determine the molar mass of (a) MgSO4. (NH4)₂CO4 2. What is the percentage of Ca in CaSO4 3. How many moles of (a) CO₂ in 132g of CO₂ and (b) moles of O₂ in 128g O₂ 4. What is the Empirical formula of (a) Glucose, C6H₁2O6 and Cyclohexane C6H₁2 (b) 5. How do you detect the presence of (a) NH4+ ion; (b) CO32- ion ; (c) SO4²- ion 6. Zn is 65.4g/mol, what is number of atoms for 0.2g of Zn using the Avogadro's number. 7. Consider the combustion reaction of methane, CH4 . If 2.1 mol of methane is allowed to react with 4.0 mol of oxygen, which is the limiting reagent? 8. Ethane, C₂H6 react with O₂ to give CO₂ and H₂O. If 5 mols of Ethane is placed with 16 mols of O₂, how many mols of CO₂ will be produced.

1. Determine the molar mass of (a) MgSO4. (NH4)₂CO4 2. What is the percentage of Ca in CaSO4 3. How many moles of (a) CO₂ in 132g of CO₂ and (b) moles of O₂ in 128g O₂ 4. What is the Empirical formula of (a) Glucose, C6H₁2O6 and Cyclohexane C6H₁2 (b) 5. How do you detect the presence of (a) NH4+ ion; (b) CO32- ion ; (c) SO4²- ion 6. Zn is 65.4g/mol, what is number of atoms for 0.2g of Zn using the Avogadro's number. 7. Consider the combustion reaction of methane, CH4 . If 2.1 mol of methane is allowed to react with 4.0 mol of oxygen, which is the limiting reagent? 8. Ethane, C₂H6 react with O₂ to give CO₂ and H₂O. If 5 mols of Ethane is placed with 16 mols of O₂, how many mols of CO₂ will be produced.

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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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

1. Determine the molar mass of
(a) MgSO₄
(b) (NH₄)₂CO₄

2. What is the percentage of Ca in CaSO₄?

3. How many moles of
(a) CO₂ in 132g of CO₂
(b) moles of O₂ in 128g O₂

4. What is the empirical formula of
(a) Glucose, C₆H₁₂O₆ and Cyclohexane, C₆H₁₂

5. How do you detect the presence of:
(a) NH₄⁺ ion
(b) CO₃²⁻ ion
(c) SO₄²⁻ ion

6. Zn is 65.4g/mol. What is the number of atoms for 0.2g of Zn using Avogadro’s number?

7. Consider the combustion reaction of methane, CH₄.
If 2.1 mol of methane is allowed to react with 4.0 mol of oxygen, which is the limiting reagent?

8. Ethane, C₂H₆, reacts with O₂ to give CO₂ and H₂O.
If 5 mols of ethane are placed with 16 mols of O₂, how many mols of CO₂ will be produced?

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