Conversion Factor Method in Chemistry

The video tutorial explains how to convert 0.25 atmospheres to millimeters of mercury using two methods. The first method involves setting up a ratio and cross-multiplying to find the equivalent in millimeters of mercury. The second method uses a conversion factor, where atmospheres are canceled out to leave millimeters of mercury. Both methods yield the same result of 190 millimeters of mercury. The tutorial emphasizes understanding unit conversion and ensuring correct units in the final answer.

What is the equivalent of 1 atmosphere in millimeters of mercury?

• 700 millimeters of mercury

• 800 millimeters of mercury

• 760 millimeters of mercury

• 750 millimeters of mercury

In the first method, what is the result of multiplying 0.25 by 760?

• 210

• 190

• 180

• 200

What is the purpose of setting up a ratio in the first method?

• To simplify the equation

• To cancel out units

• To determine the conversion factor

• To find the value of X

Why do teachers prefer the conversion factor method?

• It is faster

• It uses fewer calculations

• It ensures correct units

• It is more accurate

What is placed on the bottom of the conversion factor to cancel out atmospheres?

• Millimeters of mercury

• Atmospheres

• Liters

• Grams

What is the final result of converting 0.25 atmospheres using the conversion factor method?

• 210 millimeters of mercury

• 180 millimeters of mercury

• 190 millimeters of mercury

• 200 millimeters of mercury

What is the main advantage of using the conversion factor method?

• It requires less knowledge

• It confirms the correct units

• It is more visual

• It is simpler

What is the key takeaway from the conversion process?

• Use the ratio method

• Memorize conversion factors

• Ensure units are correct

• Always use a calculator

What is the equivalent of 0.25 atmospheres in millimeters of mercury?

• 210 millimeters of mercury

• 180 millimeters of mercury

• 190 millimeters of mercury

• 200 millimeters of mercury