Math help please...

Eos of the Eons · 16th March 2011, 07:45 AM

What is 40 micrograms per litre converted to grams/ml?
And
what is 225 micrograms per litre converted to grams/ml?

Much appreciated... I feel math challenged today...

JJM 777 · 16th March 2011, 08:06 AM

40 µg / l =
0,00004 g / 1000 ml =
0,00000004 g / ml

225 µg / l =
0,000225 g / 1000 ml =
0,000000225 g / ml

Eos of the Eons · 16th March 2011, 08:18 AM

drat...

Thank you!!

roger · 16th March 2011, 08:27 AM

BTW, google can solve that for you. The search term for the first is is:

40 micrograms/liter in grams/ml

Ocelot · 16th March 2011, 08:40 AM

No you're diving top and bottom by 1,000

When you divide 1 by 1000 y0ou get 0.001 that's the way the decimal goes.

Eos of the Eons · 16th March 2011, 08:42 AM

Thank you! Glad I asked, big time!

jli · 16th March 2011, 09:27 AM

It might be more reader friendly to use another form of notation:

40 µg / l = 40 x10^-6 g/l = 40x10 ^-9 g/ml
And
225 µg / l = 225 x 10^-6g/l = 225 x 10^-9g/ml

rjh01 · 16th March 2011, 01:25 PM

Here is a link to the answer http://www.wolframalpha.com/input/?i...+grams%2Fml%3F

Here is the home page. http://www.wolframalpha.com/

Just in case you or any lurkers have similar questions.

kalen · 16th March 2011, 03:33 PM

Originally Posted by jli

It might be more reader friendly to use another form of notation:

40 µg / l = 40 x10^-6 g/l = 40x10 ^-9 g/ml
And
225 µg / l = 225 x 10^-6g/l = 225 x 10^-9g/ml

Not only is it easier to read, you also have the correct number of significant digits.

16th March 2011, 07:45 AM	#1
Eos of the Eons Mad Scientist Join Date: Jul 2003 Location: Alberta Posts: 13,894	Math help please... What is 40 micrograms per litre converted to grams/ml? And what is 225 micrograms per litre converted to grams/ml? Much appreciated... I feel math challenged today...
	__________________ Motion affecting a measuring device does not affect what is actually being measured, except to inaccurately measure it. the immaterial world doesn't matter, cause it ain't matter-Jeff Corey my karma ran over my dogma-vbloke The Lateral Truth: An Apostate's Bible Stories by Rebecca Bradley, read it!

16th March 2011, 08:06 AM	#2
JJM 777 Illuminator Join Date: Jun 2004 Location: Finland Posts: 3,175	40 µg / l = 0,00004 g / 1000 ml = 0,00000004 g / ml 225 µg / l = 0,000225 g / 1000 ml = 0,000000225 g / ml
	Last edited by JJM 777; 16th March 2011 at 08:08 AM.

16th March 2011, 08:18 AM	#3
Eos of the Eons Mad Scientist Join Date: Jul 2003 Location: Alberta Posts: 13,894	drat... Thank you!!
	__________________ Motion affecting a measuring device does not affect what is actually being measured, except to inaccurately measure it. the immaterial world doesn't matter, cause it ain't matter-Jeff Corey my karma ran over my dogma-vbloke The Lateral Truth: An Apostate's Bible Stories by Rebecca Bradley, read it! Last edited by Eos of the Eons; 16th March 2011 at 08:29 AM.

16th March 2011, 08:27 AM	#4
roger Penultimate Amazing Join Date: May 2002 Location: Mountain View, CA Posts: 11,021	BTW, google can solve that for you. The search term for the first is is: 40 micrograms/liter in grams/ml
	__________________ May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view. May your mountains rise into and above the clouds. - Edward Abbey Climb the mountains and get their good tidings. Nature's peace will flow into you as sunshine flows into trees. The winds will blow their own freshness into you, and the storms their energy, while cares will drop off like autumn leaves. - John Muir

16th March 2011, 08:40 AM	#5
Ocelot Illuminator Join Date: Feb 2007 Location: London Posts: 3,016	No you're diving top and bottom by 1,000 When you divide 1 by 1000 y0ou get 0.001 that's the way the decimal goes.
	__________________ EDL = English Disco Lovers

16th March 2011, 08:42 AM	#6
Eos of the Eons Mad Scientist Join Date: Jul 2003 Location: Alberta Posts: 13,894	Thank you! Glad I asked, big time!
	__________________ Motion affecting a measuring device does not affect what is actually being measured, except to inaccurately measure it. the immaterial world doesn't matter, cause it ain't matter-Jeff Corey my karma ran over my dogma-vbloke The Lateral Truth: An Apostate's Bible Stories by Rebecca Bradley, read it!

16th March 2011, 09:27 AM	#7
jli Critical Thinker Join Date: Jan 2008 Location: Denmark Posts: 312	It might be more reader friendly to use another form of notation: 40 µg / l = 40 x10^-6 g/l = 40x10 ^-9 g/ml And 225 µg / l = 225 x 10^-6g/l = 225 x 10^-9g/ml
	__________________ Cancer is not a fungus. Anaximperator-blog

16th March 2011, 01:25 PM	#8
rjh01 Gentleman of leisure Tagger Join Date: May 2005 Location: Planet Earth Posts: 17,169	Here is a link to the answer http://www.wolframalpha.com/input/?i...+grams%2Fml%3F Here is the home page. http://www.wolframalpha.com/ Just in case you or any lurkers have similar questions.

16th March 2011, 03:33 PM	#9
kalen Your Daddy Join Date: Mar 2004 Location: Classified Posts: 933	Originally Posted by jli It might be more reader friendly to use another form of notation: 40 µg / l = 40 x10^-6 g/l = 40x10 ^-9 g/ml And 225 µg / l = 225 x 10^-6g/l = 225 x 10^-9g/ml Not only is it easier to read, you also have the correct number of significant digits.
	__________________ No way! Yahweh!