Unit Conversion: mmHg to Atmospheres

The video tutorial demonstrates how to convert 340 mm of mercury to atmospheres using a conversion factor. The conversion factor used is 1 atmosphere equals 760 mm of mercury. The process involves multiplying 340 mm of mercury by the conversion factor, ensuring that the units of mm of mercury cancel out, leaving the result in atmospheres. The final calculation results in 0.447 atmospheres, which is verified by checking the units. Dr. B concludes the tutorial by confirming the accuracy of the conversion.

What is the initial pressure value that needs to be converted?

• 340 mm of mercury

• 760 mm of mercury

• 1 atmosphere

• 0.447 atmospheres

What is the conversion factor used to convert mm of mercury to atmospheres?

• 1 atmosphere = 500 mm of mercury

• 1 atmosphere = 1000 mm of mercury

• 1 atmosphere = 340 mm of mercury

• 1 atmosphere = 760 mm of mercury

Where should the 760 mm of mercury be placed in the conversion factor to cancel out the units?

• On the bottom

• It doesn't matter

• On the top

• Next to the atmosphere

What is the final result of converting 340 mm of mercury to atmospheres?

• 0.500 atmospheres

• 1.000 atmospheres

• 0.760 atmospheres

• 0.447 atmospheres

Why is it important to ensure the units cancel out during conversion?

• To increase the value of the result

• To ensure the result is in the correct units

• To avoid using a calculator

• To make the calculation easier

What confirms that the conversion from mm of mercury to atmospheres was done correctly?

• The numbers match

• The result is a whole number

• The calculation was quick

• The units work out correctly