Weight times density yeilds volume. You need it's density before you can compute it's volume.
Only with materials (like water) where the specific gravity is 1(implying 1ml of water weighs one gram) are you able to convert fluid measurements to/from weight, without explicit multiplication/division.
2006-11-10 06:00:21
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answer #1
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answered by Radagast97 6
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Hello, Iron has a molecular weight of 56. An iron pill with some impurities is dissolved in sulfuric acid. What dissolves into the solution is iron itself, but the remaining is not iron. So if you know the concentration, you can calculate as follows: Concentration (M) = no of moles (n) / volume (L) A drop or a full flask of the same solution have always the same concentration. So the concentration inside 250 mL flask is also 1.2875x10-5 M. If you apply the same formula, you will get the following: 1.2875x10-5 M = n moles / 0.25 L n=0.32188x10-5 moles = 3.2188x10-6 moles When you multiply with 56 g/mol, or 56000 mg/mol, you will convert it into grams or milligrams, respectively. The result is 180252.8x10-6 mg = 0.1803 mg Hope this helps.
2016-03-28 01:31:08
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answer #2
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answered by Anonymous
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Compounds which are measured by weight (mg) are not typically measured by volume (ml). A pharmacist might put it into solution and would thus describe it as "mg per ml". So your question cannot be answered as written.
2006-11-10 05:29:29
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answer #3
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answered by luvlaketahoe 4
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Do you mean the molecular weight by ml? It is 780.95 according to http://www.rxlist.com/cgi/generic/dig.htm.
2006-11-10 05:29:25
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answer #4
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answered by Denny 3
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0.25 mg = 0.0025 g
g=ml
0.0025g=0.0025ml
2006-11-10 05:26:38
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answer #5
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answered by Anonymous
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1lit
=1000ml
=1kg
=1000gm
=10^6mg
1o^6 mg
=1000ml
1mg=.001ml
.25mg=.00025ml
2006-11-10 05:29:53
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answer #6
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answered by openpsychy 6
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.25ml
2006-11-11 19:55:56
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answer #7
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answered by Driscoll D 1
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