Chapter 8 Factor – Label Method Parts 1 & 2

24 in. = ___ ft.

You have just used a conversion factor.

Conversion Factors An equality is a ratio is a conversion factor. A relationship between two units expressed in fractional form

Conversion Factors A conversion factor is a ratio: 12 inches or 1 foot 1 foot 12 inches

Factor Label Method Method of converting from one unit to another using conversion factors

24 in. = ___ ft. We can solve this problem using factor label method.

PrefixSymbolValuePowerUse GigaG 1,000,000, Gigabyte MegaM1,000, Megawatt kilok1, kilometer decid decigram centic centimeter millim milliliter micro  microsecond nanon nanometer Prefixes in the Metric System

An Example of a Metric Conversion Factor 1000 m = 1 kmThis can be written as the factors...

An Example Problem … Convert cm to meters using the Factor Label Method.

Convert cm to meters 10.83cm

Convert cm to meters 10.83cm cm

Convert cm to meters 10.83cm cm m

Convert cm to meters 10.83cm cm m0.01

Convert cm to meters 10.83cm cm m0.01 = m

Convert 152dg to mg

152dg

Convert 152dg to mg 152dg dg

Convert 152dg to mg 152dg dg g

Convert 152dg to mg 152dg dg 0.1g

Convert 152dg to mg 152dg dg 0.1g

Convert 152dg to mg 152dg dg 0.1g g

Convert 152dg to mg 152dg dg 0.1g g mg

Convert 152dg to mg 152dg dg 0.1g g mg 0.001

Convert 152dg to mg 152dg dg 0.1g g mg = 15,200mg

Convert 6896s to weeks 6896s

Convert 6896s to weeks 6896s 60s min

Convert 6896s to weeks 6896s 60s min 60min hr

Convert 6896s to weeks 6896s 60s min 60min hr 24hr day

Convert 6896s to weeks 6896s 60s min 60min hr 24hr day 7 days week

Convert 6896s to weeks 6896s 60s min 60min hr 24hr day 7 days week = weeks

Convert 152 mL to dL

1.52 dL

Convert 1.38kg to cg

138,000 cg

Convert 0.56 cm to  m

5600  m

Convert mg/hr to cg/year

150.0mg hr

Convert mg/hr to cg/year 150.0mg hr 0.001g mg

Convert mg/hr to cg/year 150.0mg hr 0.001g mg0.01g cg

Convert mg/hr to cg/year 150.0mg hr 0.001g mg0.01g cg24 hr day

Convert mg/hr to cg/year 150.0mg hr 0.001g mg0.01g cg24 hr day 365 days year = 131,400 cg/year

The maximum dosage of a medication is 50,000 μg/day. An IV drip can be set in mg/hr. What should the IV drip be set at?

2.08 mg/hr

A geologist measures an advancing glacier at a rate of 2.50 mm/hr. What is this rate in km/year?

km/year

A town is 4.3 km away. How many years does it take the glacier to reach the town.

196 years

How many minutes does it take light to reach us from the sun which is 93,000,000 miles distant.

The following information will be useful: –speed of light = 3.0 x 10 8 m/s –1km = mi

How many minutes does it take light to reach us from the sun which is 93,000,000 miles distant. 93,000,000 mi The following information will be useful: speed of light = 3.0 x 10 8 m/s 1km = mi

How many minutes does it take light to reach us from the sun which is 93,000,000 miles distant. 93,000,000 mi mi km 1000 m 3.0 x 10 8 m s 60 s min = 8.3 min

Homework Factor Label Problems(10 questions)