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Understanding Mole Conversions: Conversion Factors & Two-Step Conversions, Study notes of Dimensional Analysis

An in-depth explanation of mole conversions using dimensional analysis. It covers the creation of conversion factors for mole values, such as moles to atoms or moles to grams. The document also explains how to use these conversion factors to convert between different units, including two-step conversions. It provides examples for converting moles of calcium to atoms, moles of manganese to grams, and grams of chlorine to atoms.

What you will learn

  • What is the role of the mole in two-step mole conversions?
  • How can you convert moles of a substance to atoms using conversion factors?
  • What is the relationship between moles and atoms in conversion factors?
  • How can dimensional analysis be used for mole conversions?
  • How can you convert grams of a substance to moles using conversion factors?

Typology: Study notes

2021/2022

Uploaded on 09/12/2022

ekagarh
ekagarh 🇺🇸

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MOLE CONVERSIONS
USING DIMENSIONAL ANALYSIS!
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MOLE CONVERSIONS

USING 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!!!!

MOLE-ATOM CONVERSIONS

  • WE CAN CREATE CONVERSION FACTORS FOR OUR MOLE VALUES!
  • 1 MOLE = 6.022 X 10^23 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 10^23 ATOMS CA

ସ.ଶଷ ௠௢௟ ஼௔ ଺.଴ଶଶ ௫ ଵ଴మయ^ ௔௧௢௠௦ ஼௔

=

(ସ.ଶଷ ௠௢௟ ஼௔)(଺.଴ଶଶ ௫ ଵ଴మయ^ ௔௧௢௠௦ ஼௔)

= 2.55 X 10^24 ATOMS CA

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 10^23 PARTICLES 1 MOLE = MOLAR MASS IN GRAMS
  • 6.022 X 10^23 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

=

= 2.35 MOL CL

ଶ.ଷହ ௠௢௟ ஼௟ ଺.଴ଶଶ ௫ ଵ଴మయ^ ௔௧௢௠௦ ஼௟

=

(ଶ.ଷହ ௠௢௟ ஼௟)(଺.଴ଶଶ ௫ ଵ଴మయ^ ௔௧௢௠௦ ஼௟)

= 1.42 X 10^24 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 ଼ଷ .ଶ ௚ ஼௟ ଵ ௠௢௟ ஼௟ ଷହ.ସହ ௚ ஼௟

଺.଴ଶଶ ௫ ଵ଴మయ^ ௔௧௢௠௦ ஼௟

=

(଼ଷ .ଶ௚ ஼௟)(ଵ ௠௢௟ ஼௟)(଺.଴ଶଶ ௫ ଵ଴మయ^ ௔௧௢௠௦ ஼௟)

= 1.41 X 10^24 ATOMS CL