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# Dimensional Analysis

Molar Conversion Practice
by

## Rachel Esquibel

on 17 May 2018

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#### Transcript of Dimensional Analysis

Solving The Problem
Dimensional Analysis
Dimensional Analysis
Analyze
What am I solving for?
What do I know?
Plan
Unit Cancellation!!
Compute
Multiply across
Divide numerator by denominator
Mass Conversions
1. Convert 5 pounds to kilograms

2. Convert 26,000 ounces to tons

3. Convert 12 kilograms to grams
Distance/Length
4. Convert 25 centimeters to inches

5. Convert 2000 feet to miles

6. Convert 10 miles to meters
Volume
7. Convert 17 kiloliters to gallons

8. Convert 3 barrels to quarts

9. Convert 6 liters to pints
Time
10. Convert 230 seconds to minutes

11. Convert 3 centuries to years

12. Convert 6300 minutes to weeks
Mix Problems
13. Convert 2 tons to grams

14. Convert 3000 feet to centimeters

15. Convert 50 pints to kiloliters
Mix Problems
16. Convert 2 decades to weeks

17. Convert 15,000 ounces to pounds

18. Convert 26 miles to kilometers
Mix Problems
19. Convert 200 liters to barrels

20. Convert 1 year to seconds
Date Lecture/Activity Pg#
38. 12/5/13 Dimensional Analysis
Objective:
I will review how to use dimensional analysis in order to manipulate chemical quantities to solve for mathematic procedures.

Agenda:
Dimensional Analysis - Explain
DA Practice

Chemcatalyst:

A step by step method used to convert from a known quantity to an unknown quantity using conversion factors
Derived Units & Conversion Factors
Derived Unit: A combination of SI units due to a mathematical operation
Density = mass (g)/volume (mL)

Conversion Factor: A ratio derived from the relationship between two different units
1 dozen roses= 12 roses
You can derive conversion factors from the known relationship between the unit you have and the unit you want

*Operations with Units
Cancellation occurs with the units in the same way that it occurs with numbers
a. Units are handled algebraically, just like numbers
b. Analysis of units can be a clue as to whether a problem was set up correctly

Calculations involving units must have the correct units shown throughout the working of the problem and attached to the answer
Conversion Factors
Full transcript