Hello,

I just started my chem class today and I am totally stuck on this question:

Hurriance Katrina had the 2nd lowest ever recorded barometric pressure at 0.920 mb. Convert this pressure to units of…

a. atmospheres.
b. Inches of Hg.

I know i need to convert but I'm not sure what to convert and in what order? Can you please help me?

Of course! I'll be happy to help you with your question.

To convert the barometric pressure from 0.920 mb to different units, you'll need to use conversion factors. Conversion factors allow you to convert from one unit to another by multiplying or dividing by a specific value.

Let's start by converting the barometric pressure to atmospheres:

1. To convert from millibars (mb) to atmospheres (atm), you need to use the conversion factor 1 atm = 1013.25 mb. This means that 1 atmosphere is equal to 1013.25 millibars.

2. To convert the given barometric pressure from millibars to atmospheres, you can use the following formula:

Pressure in atmospheres = Pressure in millibars / 1013.25

So, in this case, you'll have:

Pressure in atmospheres = 0.920 mb / 1013.25

Calculate this division to get the pressure in atmospheres.

Next, let's convert the barometric pressure to inches of mercury (in Hg):

1. To convert from millibars (mb) to inches of mercury (in Hg), you need to use the conversion factor 1 in Hg = 33.8639 mb. This means that 1 inch of mercury is equal to 33.8639 millibars.

2. To convert the given barometric pressure from millibars to inches of mercury, you can use the following formula:

Pressure in inches of mercury = Pressure in millibars / 33.8639

So, in this case, you'll have:

Pressure in inches of mercury = 0.920 mb / 33.8639

Calculate this division to get the pressure in inches of mercury.

By following these steps, you should be able to convert the given barometric pressure to both atmospheres and inches of mercury. Feel free to ask if you have any further questions!