Unit Conversions (1 step)

Rchem 3.3b / Hchem 2.7a

I can do one step unit conversions.

??? Video

Solve first without conversion factors:

• How many seconds are in 24.3 minutes?

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1. Steps to conversion problems

A. Circle given; underline unknown.

B. Write a plan. Start with given.

C. Write conversion factors

D. Put given over 1 and multiply by conversion factors.

E. Flip conversion factors so unwanted units cancel leaving wanted unit.

Formatting

• Show work (problem is wrong if steps are not shown with the units in each step)
• Final answers must be put in a box

Ex Video

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• How many seconds are in 24.3 minutes?

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• How many minutes are in 5,200 seconds?

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Ex Video

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• How many meters are in 582 mm?

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Ex Video

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• How many centimeters are in 24.0 mm?

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Ex Video

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• If the density of lead is 11.4 g/mL, what is the volume in mL of 8.04 g of lead?

Ex Video

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If the hospitalization rate of COVID-19 is 166.9 per 100,000 people, how many people would be expected to be hospitalized in California (population 3.951 x 10⁷)?

Extra examples by Tyler DeWitt

• What is 3.45 pounds expressed in grams? (video)
• How many miles is 15,100 ft? (video)
• On a certain day, the exchange rate between US dollars and Euros is 1 USD = 0.78 EUR. On that day, how much is 125 Euros in US dollars? (video)
• How many liters is 23,500 milliliters? (video)

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