1. The molar mass of PDF2 is 43.31 g/mol 2. The molar mass of CoF2 is 28.01 g/mol 3. The molar mass of BeF2 is 47.01 g/mol 4. The molar mass of MgF2 is 96.93 g/mol
1. The molar mass of PDF2 is 43.31 g/mol 2. The molar mass of CoF2 is 28.01 g/mol 3. The molar mass of BeF2 is 47.01 g/mol 4. The molar mass of MgF2 is 96.93 g/mol
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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Transcribed Image Text:Calculating the molar mass of a substance involves three simple steps:
1. Obtain the molar mass of each element.
2. Multiply each element's molar mass by the number of moles of that element that are present in one mole of the compound. The subscript immediately following
an atomic symbol in a molecular formula indicates how many moles of that element are present in one mole of the compound.
3. Calculate the molar mass by adding the masses of the elements.
Compound
Calculation
Molar mass
BeF2
(9.012 g/mol)(1 mol) + (19.00 g/mol)(2 mol)
47.01 g/mol
MGF2
(24.31 g/mol)(1 mol) + (19.00 g/mol)(2 mol)
62.31 g/mol
COF2
(58.93 g/mol)(1 mol) + (19.00 g/mol)(2 mol)
96.93 g/mol
PDF2
(106.42 g/mol)(1 mol) + (19.00 g/mol)(2 mol)
144.42 g/mol
Transcribed Image Text:Item 3
3 of 25
Part A
Given the atomic mass of select elements, calculate the molar mass of each salt.
Molar mass
Element
(g/mol)
Beryllium (Be)
9.012
Magnesium (Mg)
24.31
Cobalt (Co)
58.93
Palladium (Pd)
106.42
Fluorine (F)
19.00
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1. The molar mass of PdF2 is 43.31 g/mol
2. The molar mass of CoF2 is 28.01 g/mol
3. The molar mass of BeF2 is 47.01 g/mol
77.93 g/mol
62.31 g/mol
4. The molar mass of MgF2 is 96.93 g/mol
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