Conversion Factors

What is a conversion factor?
- obtained from an equality (ex. 1 in. = 2.54 cm)
- written as a fraction (ratio with a numerator and denominator & inverted to give two conversion factors for every equality.
- 1 in and 2.54 cm
- ---- --------
- 2.54 cm 1 in
Write conversion factors from the equality for litters and mL
- 1 L and 1000 mL
- -----------------
- 1000ml and 1 L
Write conversion factors from the equality for hours and minutes
- 1 h and 60 m
- --------------
- 60 m and 1 h
Write conversion factors from the equality for meters and kilometers
- 1 km and 1000 m
- ------------------
- 1000 m and 1 km
How do you solve a problem?

identify the given unit and the needed unit.
What is the given and needed unit for a person that has a height of 2.0 meters?
- given: meters
- needed: inches
An injured person loses 0.30 pints of blood. How many milliliters of blood would that be? Identify the given and needed units given in this problem.
- Given: pints
- Needed: milliliters
How do you do a problem set up for conversion factors?
- Unit 1 ......x unit 2 =................... unit 2
- .................-------
- ...................unit 1
- given unit ...conversion factor ......needed unit
How many minutes are in 2.5 hours?
Given unit:
Needed unit:
Plan:
Set Up Ptoblem:
- Given unit: hours
- Needed unit: minutes
- Plan: hours -----> minutes
- Set Up Ptoblem:
- 2.5h x 60 m
- ..........-------
- .......... 1 h
answer: 150min (2 SF..significant factors)

Author

Mon

66972

Card Set

Conversion Factors

Description

chemistry, conversion factors

Updated

2011-02-17T06:40:22Z

Show Answers