JohnS
Moderator
Last Activity: Today, 08:54 AM
Joined: 12-20-2007
Location: SE Michigan, USA
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The site plan should use true north. The surveyor established that by other means than a compass, but true north is the standard. The surveyor may or... -
Just divide by the density (or multiply by the inverse), so units cancel
2600 t x 1 m³/1.45 t = 1793 m³...Leave a comment:
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One degree is not 60 feet. It is just an unfortunate coincidence that the same symbol is used for feet and arc minutes.
However, it is true...Leave a comment:
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Each lot line of a property is specified from marker to marker as a distance (surveyors don't use inches, the number is decimal feet) and bearing in degrees...Leave a comment:
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For 75% purity, divide 25 g by 0.75, for 80% purity, divide 25 g/0.8, or 31.1 g. In either case, dilute to final volume of 100 mL. That will be a bit...Last edited by JohnS; 07-03-2020, 07:12 AM.Leave a comment:
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Alex, I am sorry. I have been a little confused by this thread, and just figured it out. Because I click on the "latest post" option, I never...Leave a comment:
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But do you want to dilute it all to 5%. If so 0.36 * 2.5 L/0.05 = 18 L diluteo to 18 L final volume (requires about 15.5 L water, but measure final ...Leave a comment:
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In the first case, add water to dilute to 125 mL final volume (about 117.3 mL of water but recall volumes are not strictly additive.
Not...Leave a comment:
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On the first part, I am unclear what you are trying to do. Do you have 1 L of 7% and want to fully dilute it to 4%, or do you want to make 1 L of 4%....Leave a comment:
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C1 * V1 = C2 * V2
If you start with 1 L of 7% you can dilute to V1 = 0.07*1 L/0.04 = 1.75 L of 4%.
This will require about 1.75 L -...Leave a comment:
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Yes, basically. I made a couple of edits in what you wrote to correct units, but the numbers are correct....Leave a comment:
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The first question is what kind of percent? Is the basis mass/mass or mass over volume?
Also, it is fairly nasty stuff. One of the makers...Leave a comment:
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I think the first step is to express your stock solution in molarity. "M" is shorthand for moles per liter, so you have
100 µg/mL x 1...Leave a comment:
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