mole conversions - plainfield north high schoolpnhs.psd202.org/documents/lcasey/1541772225.pdf ·...
TRANSCRIPT
MOLE CONVERSIONSUSING DIMENSIONAL ANALYSIS!
CONVERSIONS
• CONVERSIONS USING DIMENSIONAL ANALYSIS:
• RELATIONSHIPS BETWEEN 2 VALUES THAT ARE EQUAL TO EACH OTHER CAN CREATE CONVERSION FACTORS
• EX:
• 1 FOOT = 12 INCHES
• WE CAN USE THIS RELATIONSHIP TO DEVELOP TWO DIFFERENT CONVERSION FACTORS:
•
OR
THESE CONVERSION FACTORS ARE EQUAL
TO EACH OTHER!!!!
CONVERSIONS
•
=
• THE CONVERSION FACTOR WE USE WILL DEPEND ON WHAT WE ARE GIVEN AND WHAT WE ARE TRYING TO FIND!
• CONVERT 3 FEET TO INCHES:
• GIVEN: 3 FEET
• FIND: INCHES
• 3 FEET 12 INCHES = 36 INCHES
1 FOOT
• USE A T-CHART TO HELP ORGANIZE YOUR
INFORMATION:
• GIVEN IN THE TOP LEFT, CONVERSION
FACTOR IN THE NEXT 2 BOXES
• MULTIPLY ACROSS, DIVIDE BY THE BOTTOM,
CANCEL UNITS
• #
MOLE-ATOM CONVERSIONS
• WE CAN CREATE CONVERSION FACTORS FOR OUR MOLE VALUES!
• 1 MOLE = 6.022 X 1023 PARTICLES
•
. =
.
• *PARTICLES = ATOMS, MOLECULES, IONS, FORMULA UNITS, ETC.
MOLE-ATOM CONVERSIONS
• EX. CONVERT 4.23 MOLES OF CALCIUM TO ATOMS OF CALCIUM.
• GIVEN = 4.23 MOL CA
• FIND = ATOMS CA
• 1 MOLE CA = 6.022 X 1023 ATOMS CA
•. .
=
( . )( . )
= 2.55 X 1024 ATOMS CA
MOLE-GRAM CONVERSIONS
• WE CAN CREATE CONVERSION FACTORS FOR OUR MOLE VALUES!
• 1 MOLE = MOLAR MASS IN GRAMS
•
=
• MOLAR MASS IS FOUND ON THE PERIODIC TABLE!
MOLE-GRAM CONVERSIONS
• EX. CONVERT 124.6G OF MANGANESE TO MOLES OF MANGANESE
• GIVEN = 124.6 G MN
• FIND = MOLES MN
• 1 MOLE MANGANESE = 54.94 G MANGANESE
•.
. =
( . )( )
. = 2.27 MOL MN
2-STEP MOLE CONVERSIONS
• YOU CAN USE BOTH CONVERSION FACTORS TO CONVERT BETWEEN GRAMS AND PARTICLES!
• 1 MOLE = 6.022 X 1023 PARTICLES 1 MOLE = MOLAR MASS IN GRAMS
•
. =
.
=
• 6.022 X 1023 PARTICLES = 1 MOLE = MOLAR MASS IN GRAMS
• THE MOLE IS THE INTERMEDIATE STEP!
2-STEP MOLE CONVERSIONS
• EX. CONVERT 83.2 G OF CHLORINE TO ATOMS OF CHLORINE
• GIVEN = 83.2 G CL
• FIND = ATOMS CL
• MUST CONVERT GRAMS MOLES ATOMS
• CAN DO THIS IN TWO SEPARATE STEPS OR COMBINE THE STEPS INTO ONE LONG 2-STEP
CONVERSION
2-STEP MOLE CONVERSIONS
• EX. CONVERT 83.2 G OF CHLORINE TO ATOMS OF CHLORINE
• GIVEN = 83.2 G CL
• FIND = ATOMS CL
•.
. =
( . )( )
. = 2.35 MOL CL
•. .
=
( . )( . )
= 1.42 X 1024 ATOMS CL
2-STEP MOLE CONVERSIONS
• EX. CONVERT 83.2 G OF CHLORINE TO ATOMS OF CHLORINE
• GIVEN = 83.2 G CL
• FIND = ATOMS CL
.
.
.
=
( . )( )( . )
( . )( )= 1.41 X 1024 ATOMS CL
MOLE ROAD MAP