molar mass of a substance the molar mass of a substance is the sum of the atomin mass numbers of all...

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MOLAR MASS OF A MOLAR MASS OF A SUBSTANCE SUBSTANCE • The molar mass of a substance is the The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance the atoms in the substance . . – If the substance is an atom, the mass is If the substance is an atom, the mass is called called ATOMIC MASS ATOMIC MASS – If the substance is a compound, the mass If the substance is a compound, the mass is called molar mass or gram formula mass. is called molar mass or gram formula mass. – The molar mass of a substance is in the The molar mass of a substance is in the units grams/mole and is units grams/mole and is NOT NOT affected by affected by coefficients. coefficients. – The molar mass is an The molar mass is an INTENSIVE PROPERTY INTENSIVE PROPERTY , , and is constant despite the size of your and is constant despite the size of your sample. sample.

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CALCULATION OF MOLAR MASS K1 Mn1 O4 LISTELEMENTSHERE LIST SUBSCRIPTS

TRANSCRIPT

Page 1: MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance

MOLAR MASS OF A MOLAR MASS OF A SUBSTANCESUBSTANCE• The molar mass of a substance is the The molar mass of a substance is the

SUM of the ATOMIN MASS NUMBERS SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substanceof ALL the atoms in the substance..– If the substance is an atom, the mass is called If the substance is an atom, the mass is called

ATOMIC MASSATOMIC MASS– If the substance is a compound, the mass is If the substance is a compound, the mass is

called molar mass or gram formula mass.called molar mass or gram formula mass.– The molar mass of a substance is in the units The molar mass of a substance is in the units

grams/mole and is grams/mole and is NOTNOT affected by affected by coefficients.coefficients.

– The molar mass is an The molar mass is an INTENSIVE PROPERTYINTENSIVE PROPERTY, , and is constant despite the size of your and is constant despite the size of your sample.sample.

Page 2: MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance

CALCULATION OF MOLAR MASSCALCULATION OF MOLAR MASS

KK

MnMn

OO

LISTLISTELEMENTSELEMENTS

HEREHERE

Example, calculate the molar mass of Example, calculate the molar mass of KMnOKMnO44

Page 3: MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance

CALCULATION OF MOLAR CALCULATION OF MOLAR MASSMASS

KK 11

MnMn 11

OO 44

LISTLISTELEMENTSELEMENTS

HEREHERE

LIST LIST SUBSCRIPTSUBSCRIPT

SS

Page 4: MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance

CALCULATION OF MOLAR CALCULATION OF MOLAR MASSMASS

KK 11 XX

MnMn 11 XX

OO 44 XX

LISTLISTELEMENTSELEMENTS

HEREHERE

LIST LIST SUBSCRIPTSUBSCRIPT

SS

MULTIPLYMULTIPLY

Page 5: MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance

CALCULATION OF MOLAR CALCULATION OF MOLAR MASSMASS

KK 11 XX 24.30 24.30 G/MOL G/MOL ==

MnMn 11 XX 54.9354.93 G/MOL G/MOL ==

OO 44 XX 15.99 15.99 G/MOL G/MOL ==

LISTLISTELEMENTSELEMENTS

HEREHERE

LIST LIST SUBSCRIPTSUBSCRIPT

SS

MULTIPLYMULTIPLY INSERT INSERT ATOMIC ATOMIC MASSMASS

FROM PERIODIC FROM PERIODIC TABLETABLE

Page 6: MOLAR MASS OF A SUBSTANCE The molar mass of a substance is the SUM of the ATOMIN MASS NUMBERS of ALL the atoms in the substance. The molar mass of a substance

CALCULATION OF MOLAR CALCULATION OF MOLAR MASSMASS

KK 11 XX 24.30 24.30 G/MOL G/MOL ==

24.30 24.30 GG

MnMn 11 XX 54.9354.93 G/MOL G/MOL ==

54.93 54.93 GG

OO 44 XX 15.99 15.99 G/MOL G/MOL ==

63.9663.96 GG

LISTLISTELEMENTSELEMENTS

HEREHERE

LIST LIST SUBSCRIPTSUBSCRIPT

SS

MULTIPLYMULTIPLY INSERT INSERT ATOMIC ATOMIC MASSMASS

FROM PERIODIC FROM PERIODIC TABLETABLE

Add SUBTOTALSAdd SUBTOTALS

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