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 followingan 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.CompoundCalculationMolar massBeF2(9.012 g/mol)(1 mol) + (19.00 g/mol)(2 mol)47.01 g/molMGF2(24.31 g/mol)(1 mol) + (19.00 g/mol)(2 mol)62.31 g/molCOF2(58.93 g/mol)(1 mol) + (19.00 g/mol)(2 mol)96.93 g/molPDF2(106.42 g/mol)(1 mol) + (19.00 g/mol)(2 mol)144.42 g/mol Item 33 of 25Part AGiven the atomic mass of select elements, calculate the molar mass of each salt.Molar massElement(g/mol)Beryllium (Be)9.012Magnesium (Mg)24.31Cobalt (Co)58.93Palladium (Pd)106.42Fluorine (F)19.00Match the numbers to the appropriate blanks in the sentences below. Make certain each sentence is complete before submitting your answer.View Available Hint(s)ResetHelp1. The molar mass of PdF2 is 43.31 g/mol2. The molar mass of CoF2 is 28.01 g/mol3. The molar mass of BeF2 is 47.01 g/mol77.93 g/mol62.31 g/mol4. The molar mass of MgF2 is 96.93 g/mol

Molar mass of a compound is defined as the mass of a one mole of a substance. Its unit is g/mol.…

Given the atomic mass of select elements, calculate the molar mass of each salt. Molar mass Element (g/mol) Beryllium (Be) Magnesium (Mg) Cobalt (Co) 9.012 24.31 58.93 Palladium (Pd) 106.42 Fluorine (F) 19.00

Given the atomic mass of select elements, calculate the molar mass of each salt. Molar mass Element (g/mol) Beryllium (Be) Magnesium (Mg) Cobalt (Co) 9.012 24.31 58.93 Palladium (Pd) 106.42 Fluorine (F) 19.00

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

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

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

Chapter6: Chemical Composition

Section: Chapter Questions

Problem 52A

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

100%

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

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
Match the numbers to the appropriate blanks in the sentences below. Make certain each sentence is complete before submitting your answer.
View Available Hint(s)
Reset
Help
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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