# How do you convert #"255 mm Hg"# to #"atm"#? What about #"620 torr"# to #"PSI"#?

THE RATIOS OF CONVERSION

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WORKING ON THE TRANSFORMATIONS

First of all

Let us begin with the equality that we just outlined.

This suggests that multiplying by this ratio maintains your numerical information while making no changes to the validity of your answer other than the units.

As a result, we obtain:

You now have various units of the same pressure.

(2)

Here is how this ratio is applied:

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To convert 255 mm Hg to atm, divide by 760: ( 255 , \text{mm Hg} \div 760 = 0.335 , \text{atm} ).

To convert 620 torr to PSI, divide by 51.715: ( 620 , \text{torr} \div 51.715 = 11.98 , \text{PSI} ).

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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