Chemistry
Chemistry
4th Edition
ISBN: 9780393919370
Author: Thomas R. Gilbert
Publisher: NORTON
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Chapter 3, Problem 3.32QP

(a)

Interpretation Introduction

Interpretation: Molar mass of the given mineral molecules is to be calculated.

Concept introduction: Molar mass is a physical quantity to measure the mass of the atoms. The mass in grams of one mole of any substance is known as the molar mass of that substance. It is represented by the symbol M . In case of molecules the molar mass of the molecule is the sum of molar mass of all the atoms present in that molecule. Generally the molar mass of the compound is expressed in g/mol .

To determine: The molar mass of the mineral molecule rhodonite MnSiO3 .

(a)

Expert Solution
Check Mark

Answer to Problem 3.32QP

Solution

The molar mass of the MnSiO3 molecule is 131.0217g/mol_ .

Explanation of Solution

Explanation

The given MnSiO3 molecule consists of one manganese atom, one silicon atom and three oxygen atoms. Therefore, the molar mass of the given molecule is the sum of all the atoms present in the molecule. The molar mass of the manganese, silicon and oxygen atoms are 54.9380g/mol,28.0855g/moland15.9994g/mol respectively. Hence, the molar mass of the MnSiO3 molecule is calculated by the given formula,

MMnSiO3=MMn+MSi+3MO

Where,

  • MMnSiO3 represents the molar mass of the MnSiO3 molecule.
  • MMn represents the atomic mass of the Mn atom.
  • MSi represents the atomic mass of the Si atom.
  • MO represents the atomic mass of the O atom.

Substitute the values in the above formula.

MMnSiO3=MMn+MSi+3MOMMnSiO3=(54.9380g/mol)+(28.0855g/mol)+3(15.9994g/mol)MMnSiO3=(54.9380g/mol)+(28.0855g/mol)+(47.9982g/mol)MMnSiO3=131.0217g/mol_

(b)

Interpretation Introduction

To determine: The molar mass of the mineral molecule scheelite CaWO4 .

(b)

Expert Solution
Check Mark

Answer to Problem 3.32QP

Solution

The molar mass of the CaWO4 molecule is 287.9156g/mol_ .

Explanation of Solution

Explanation

The given CaWO4 molecule consists of one calcium atom, one tungsten atom and four oxygen atoms. Therefore, the molar mass of the given molecule is the sum of all the atoms present in the molecule. The molar mass of the calcium, tungsten and oxygen atoms are 40.0780g/mol,183.8400g/moland15.9994g/mol respectively. Hence, the molar mass of the CaWO4 molecule is calculated by the given formula,

MCaWO4=MCa+MW+4MO

Where,

  • MCaWO4 represents the molar mass of the CaWO4 molecule.
  • MCa represents the atomic mass of the Ca atom.
  • MW represents the atomic mass of the W atom.
  • MO represents the atomic mass of the O atom.

Substitute the values in the above formula.

MCaWO4=MCa+MW+4MOMCaWO4=(40.0780g/mol)+(183.8400g/mol)+4(15.9994g/mol)MCaWO4=287.9156g/mol_

(c)

Interpretation Introduction

To determine: The molar mass of the mineral molecule ilmenite FeTiO3 .

(c)

Expert Solution
Check Mark

Answer to Problem 3.32QP

Solution

The molar mass of the FeTiO3 molecule is 151.7102g/mol_ .

Explanation of Solution

Explanation

The given FeTiO3 molecule consists of one iron, one titanium and three oxygen atoms. Therefore, the molar mass of the given molecule is the sum of all the atoms present in the molecule. The molar mass of the iron, titanium and oxygen atoms are  respectively. Hence, the molar mass of the FeTiO3 molecule is calculated by the given formula,

MFeTiO3=MFe+MTi+3MO

Where,

  • MFeTiO3 represents the molar mass of the FeTiO3 molecule.
  • MFe represents the atomic mass of the Fe atom.
  • MTi represents the atomic mass of the Ti atom.
  • MO represents the atomic mass of the O atom.

Substitute the values in the above formula.

MFeTiO3=MFe+MTi+3MOMFeTiO3=(55.8450g/mol)+(47.867g/mol)+3(15.9994g/mol)MFeTiO3=(55.8450g/mol)+(47.867g/mol)+(47.9982g/mol)MFeTiO3=151.7102g/mol_

(d)

Interpretation Introduction

To determine: The molar mass of the mineral molecule magnesite MgCO3 .

(d)

Expert Solution
Check Mark

Answer to Problem 3.32QP

Solution

The molar mass of the MgCO3 molecule is 84.3139g/mol_ .

Explanation of Solution

Explanation

The given MgCO3 molecule consists of one magnesium atom, one carbon atom and three oxygen atoms, Therefore, the molar mass of the given molecule is the sum of all the atoms present in the molecule. The molar mass of the magnesium, carbon and oxygen atoms are 24.3050g/mol,12.0107g/moland15.9994g/mol respectively. Hence, the molar mass of the MgCO3 molecule is calculated by the given formula,

MMgCO3=MMg+MC+3MO

Where,

  • MMgCO3 represents the molar mass of the MgCO3 molecule.
  • MMg represents the atomic mass of the Mg atom.
  • MC represents the atomic mass of the C atom.
  • MO represents the atomic mass of the O atom.

Substitute the values in the above formula.

MMgCO3=MMg+MC+3MOMMgCO3=(24.3050g/mol)+(12.0107g/mol)+3(15.9994g/mol)MMgCO3=(24.3050g/mol)+(12.0107g/mol)+(47.9982g/mol)MMgCO3=84.3139g/mol_

Conclusion

  1. a) The molar mass of MnSiO3 is 131.0217g/mol_ .
  2. b) The molar mass of CaWO4 is 287.9156g/mol_ .
  3. c) The molar mass of FeTiO3 is 151.7102g/mol_ .
  4. d) The molar mass of MgCO3 is 84.3139g/mol_

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Chapter 3 Solutions

Chemistry

Ch. 3.5 - Prob. 12PECh. 3.5 - Prob. 13PECh. 3.6 - Prob. 14PECh. 3.6 - Prob. 16PECh. 3.7 - Prob. 17PECh. 3.8 - Prob. 18PECh. 3.8 - Prob. 19PECh. 3.9 - Prob. 20PECh. 3.9 - Prob. 21PECh. 3.9 - Prob. 22PECh. 3.9 - Prob. 23PECh. 3 - Prob. 3.1VPCh. 3 - Prob. 3.2VPCh. 3 - Prob. 3.3VPCh. 3 - Prob. 3.4VPCh. 3 - Prob. 3.5VPCh. 3 - Prob. 3.6VPCh. 3 - Prob. 3.7VPCh. 3 - Prob. 3.8VPCh. 3 - Prob. 3.9QPCh. 3 - Prob. 3.10QPCh. 3 - Prob. 3.11QPCh. 3 - Prob. 3.12QPCh. 3 - Prob. 3.13QPCh. 3 - Prob. 3.14QPCh. 3 - Prob. 3.15QPCh. 3 - Prob. 3.16QPCh. 3 - Prob. 3.17QPCh. 3 - Prob. 3.18QPCh. 3 - Prob. 3.19QPCh. 3 - Prob. 3.20QPCh. 3 - Prob. 3.21QPCh. 3 - Prob. 3.22QPCh. 3 - Prob. 3.23QPCh. 3 - Prob. 3.24QPCh. 3 - Prob. 3.25QPCh. 3 - Prob. 3.26QPCh. 3 - Prob. 3.27QPCh. 3 - Prob. 3.28QPCh. 3 - Prob. 3.29QPCh. 3 - Prob. 3.30QPCh. 3 - Prob. 3.31QPCh. 3 - Prob. 3.32QPCh. 3 - Prob. 3.33QPCh. 3 - Prob. 3.34QPCh. 3 - Prob. 3.35QPCh. 3 - Prob. 3.36QPCh. 3 - Prob. 3.37QPCh. 3 - Prob. 3.38QPCh. 3 - Prob. 3.39QPCh. 3 - Prob. 3.40QPCh. 3 - Prob. 3.41QPCh. 3 - Prob. 3.42QPCh. 3 - Prob. 3.43QPCh. 3 - Prob. 3.44QPCh. 3 - Prob. 3.45QPCh. 3 - Prob. 3.46QPCh. 3 - Prob. 3.47QPCh. 3 - Prob. 3.48QPCh. 3 - Prob. 3.49QPCh. 3 - Prob. 3.50QPCh. 3 - Prob. 3.51QPCh. 3 - Prob. 3.52QPCh. 3 - Prob. 3.53QPCh. 3 - Prob. 3.54QPCh. 3 - Prob. 3.55QPCh. 3 - Prob. 3.56QPCh. 3 - Prob. 3.57QPCh. 3 - Prob. 3.58QPCh. 3 - Prob. 3.59QPCh. 3 - Prob. 3.60QPCh. 3 - Prob. 3.61QPCh. 3 - Prob. 3.62QPCh. 3 - Prob. 3.63QPCh. 3 - Prob. 3.64QPCh. 3 - Prob. 3.65QPCh. 3 - Prob. 3.66QPCh. 3 - Prob. 3.67QPCh. 3 - Prob. 3.68QPCh. 3 - Prob. 3.69QPCh. 3 - Prob. 3.70QPCh. 3 - Prob. 3.71QPCh. 3 - Prob. 3.72QPCh. 3 - Prob. 3.73QPCh. 3 - Prob. 3.74QPCh. 3 - Prob. 3.75QPCh. 3 - Prob. 3.76QPCh. 3 - Prob. 3.77QPCh. 3 - Prob. 3.78QPCh. 3 - Prob. 3.79QPCh. 3 - Prob. 3.80QPCh. 3 - Prob. 3.81QPCh. 3 - Prob. 3.82QPCh. 3 - Prob. 3.83QPCh. 3 - Prob. 3.84QPCh. 3 - Prob. 3.85QPCh. 3 - Prob. 3.86QPCh. 3 - Prob. 3.87QPCh. 3 - Prob. 3.88QPCh. 3 - Prob. 3.89QPCh. 3 - Prob. 3.90QPCh. 3 - Prob. 3.91QPCh. 3 - Prob. 3.92QPCh. 3 - Prob. 3.93QPCh. 3 - Prob. 3.94QPCh. 3 - Prob. 3.95QPCh. 3 - Prob. 3.96QPCh. 3 - Prob. 3.97QPCh. 3 - Prob. 3.98QPCh. 3 - Prob. 3.99QPCh. 3 - Prob. 3.100QPCh. 3 - Prob. 3.101QPCh. 3 - Prob. 3.102QPCh. 3 - Prob. 3.103QPCh. 3 - Prob. 3.104QPCh. 3 - Prob. 3.105QPCh. 3 - Prob. 3.106QPCh. 3 - Prob. 3.107QPCh. 3 - Prob. 3.108QPCh. 3 - Prob. 3.109QPCh. 3 - Prob. 3.110QPCh. 3 - Prob. 3.111QPCh. 3 - Prob. 3.112QPCh. 3 - Prob. 3.113QPCh. 3 - Prob. 3.114QPCh. 3 - Prob. 3.115QPCh. 3 - Prob. 3.116QPCh. 3 - Prob. 3.117APCh. 3 - Prob. 3.118APCh. 3 - Prob. 3.119APCh. 3 - Prob. 3.120APCh. 3 - Prob. 3.121APCh. 3 - Prob. 3.122APCh. 3 - Prob. 3.123APCh. 3 - Prob. 3.124APCh. 3 - Prob. 3.125APCh. 3 - Prob. 3.126APCh. 3 - Prob. 3.127APCh. 3 - Prob. 3.128APCh. 3 - Prob. 3.129APCh. 3 - Prob. 3.130APCh. 3 - Prob. 3.131APCh. 3 - Prob. 3.132APCh. 3 - Prob. 3.133APCh. 3 - Prob. 3.134APCh. 3 - Prob. 3.135APCh. 3 - Prob. 3.136APCh. 3 - Prob. 3.137APCh. 3 - Prob. 3.138APCh. 3 - Prob. 3.139APCh. 3 - Prob. 3.140APCh. 3 - Prob. 3.141APCh. 3 - Prob. 3.142APCh. 3 - Prob. 3.143APCh. 3 - Prob. 3.144AP
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