?? mg. / 1ml. ??

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?? mg. / 1ml. ??

Postby Kittie_9781 » Tue May 25, 2004 5:27 pm

I'm going crazy!!! can someone please tell me how many mg. in 1ml. This is for my Medical Assistant class and i'll be at school in about 3 hrs. I need this STUPID conversion. :shock:
Kittie_9781
 

Re: ?? mg. / 1ml. ??

Postby Knight » Tue May 25, 2004 10:08 pm

Kittie_9781 wrote:I'm going crazy!!! can someone please tell me how many mg. in 1ml. This is for my Medical Assistant class and i'll be at school in about 3 hrs. I need this STUPID conversion. :shock:

It's now 9:05 AM PST, so this answer is most likely not going to help you. My apologies, but I'm usually NOT awake at four thirty AM...

First and formost: It's not a conversion. It's a definition.

Remember the basics of the Metric System. A liter is a derived unit defined as the volume of water at 4°c that is contained in a cube 10 cm x 10 cm x 10 cm. That would be 10x10x10=1000, cmxcmxcm = cm³, or 1,000 cm³. That leads us to the next derived unit, the kilogram. One liter of water at 4°c weighs one kilogram.

One Kilogram is 1x10³ grams or 1,000 grams.

1,000 cm³ = 1,000 g, therefore:

1 cm³ = 1 gram

Now, 1 gram is 1,000 milligrams (1 gram x 1x10³ mg/g = 1,000 mg), so...

1 cm³ = 1,000 mg.
William J. Knight
Health Physicist
Los Alamos National Labs
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