1. Suppose the masses of sucrose, sulphur, and magnesium sulphate provided in the table represent the mass of a level teaspoon of the substance, which sample contained the greatest number of moles of substance? compoundmassmolar massmoles of substancemoles of each elementatoms of each elementsodium chloride (NaCl)5.690 g58.435 g/mol0.0973 molNa = 0.0973 moleNa=5.8574 x1022 atomsCl = 0.0973 moleCl=5.8574 x1022 atoms water (H2O)4.930 g18.014 g/mol0.2736 molH = 0.5472 moleH= 3.2941 x1023 atomsO = 0.2736 moleO= 1.6470 x1023 atoms sucrose (C12H22O11)4.000 g342.251 g/mol0.0116 molC = 0.1392 moleC= 8.3798 x1022 atomsH = 0.2552 moleH= 1.5363 x1023 atomsO = 0.1276 moleO= 7.6815 x1022 atomssulphur (S)3.200 g32.059 g/mol0.0998 molS = 0.0998 moleS= 6.0079 x1022 atoms magnesium sulphate (MgSO4)3.300 g120.359 g/mol0.0274 molMg = 0.0274 moleMg= 1.6494 x1022 atomsS = 0.0274 moleS= 1.6494 x1022 atomsO = 0.1096 moleO= 6.5979 x1022 atomsiron (III) sulphate (Fe2(SO4)3)4.800 g399.855 g/mol0.0120 molFe = 0.0240 moleFe= 1.4448 x1022 atomsS = 0.036 moleS= 2.1672 x1022 atomsO = 0.144 moleO= 8.6688 x 1022 atomsglass slide (SiO2)5.394 g60.082 g/mol0.0897 molSi = 0.0897 moleSi= 5.3999 x 1022 atomsO = 0.1795 moleO= 1.0805 x1023 atoms chalk (CaCO3)1.906 g100.084 g/mol0.0190 molCa = 0.0190 moleCa= 1.1438 x1022 atomsC = 0.0190 moleC= 1.1438 x1022 atomsO = 0.0571 moleO= 3.4374 x1022 atoms2. Suppose the masses of sodium chloride and water provided in the table represent the mass of a level teaspoon of the substance, explain why the number of atoms and moles are different when the volumes are nearly identical?

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Answered: explain why the number of atoms and…

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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1. Suppose the masses of sucrose, sulphur, and magnesium sulphate provided in the table represent the mass of a level teaspoon of the substance,
which sample contained the greatest number of moles of substance?

compound	mass	molar mass	moles of substance	moles of each element	atoms of each element
sodium chloride (NaCl)	5.690 g	58.435 g/mol	0.0973 mol	Na = 0.0973 mole	Na=5.8574 x1022 atoms
Cl = 0.0973 mole	Cl=5.8574 x1022 atoms

water (H2O)	4.930 g	18.014 g/mol	0.2736 mol	H = 0.5472 mole	H= 3.2941 x1023 atoms
O = 0.2736 mole	O= 1.6470 x1023 atoms

sucrose (C12H22O11)	4.000 g	342.251 g/mol	0.0116 mol	C = 0.1392 mole	C= 8.3798 x1022 atoms
H = 0.2552 mole	H= 1.5363 x1023 atoms
O = 0.1276 mole	O= 7.6815 x1022 atoms
sulphur (S)	3.200 g	32.059 g/mol	0.0998 mol	S = 0.0998 mole	S= 6.0079 x1022 atoms


magnesium sulphate (MgSO4)	3.300 g	120.359 g/mol	0.0274 mol	Mg = 0.0274 mole	Mg= 1.6494 x1022 atoms
S = 0.0274 mole	S= 1.6494 x1022 atoms
O = 0.1096 mole	O= 6.5979 x1022 atoms
iron (III) sulphate (Fe2(SO4)3)	4.800 g	399.855 g/mol	0.0120 mol	Fe = 0.0240 mole	Fe= 1.4448 x1022 atoms
S = 0.036 mole	S= 2.1672 x1022 atoms
O = 0.144 mole	O= 8.6688 x 1022 atoms
glass slide (SiO2)	5.394 g	60.082 g/mol	0.0897 mol	Si = 0.0897 mole	Si= 5.3999 x 1022 atoms
O = 0.1795 mole	O= 1.0805 x1023 atoms

chalk (CaCO3)	1.906 g	100.084 g/mol	0.0190 mol	Ca = 0.0190 mole	Ca= 1.1438 x1022 atoms
C = 0.0190 mole	C= 1.1438 x1022 atoms
O = 0.0571 mole	O= 3.4374 x1022 atoms

2. Suppose the masses of sodium chloride and water provided in the table represent the mass of a level teaspoon of the substance,
explain why the number of atoms and moles are different when the volumes are nearly identical?

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