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Doesn't CaCO3 not even dissolve at room temperature? How could they make a solution out of a nonsoluble salt?

I'm almost finished with my flowchart for qualitative analysis. On average, how long should it take you to identify 8 powders? I'm going to time myself with this soon, but I'd like to know what a 'good' time would be beforehand. Uh, could anyone answer this question? If it feels like I'm asking too...

yes it's a whirligig beetle larvae. also their cocoon is made out of mud. So i guess gigaboo can go next

http://www.entomology.umn.edu/midge/VSM ... va.big.jpg
how many eggs does it lay, what time of year, where, and what are its cocoons made out of?

hexagonaria wrote:

cnapun wrote:Does anybody know what the topic for next year will be?? Glaciers or Oceanography?

I'm pretty sure it's glaciers, but don't hold me to that.

Glaciers. Oceanography was the topic before Earthquakes/Volcanoes so glaciers are next in the rotation.

other than structural support, does anyone know if the sound post on a violin has an acoustic purpose?

Since nobody has posted for a bit I'll go http://www.iisgcp.org/exoticsp/images/water_flea/flea1.jpg what is it, where is it invasive to, how did it get there, and why is it problematic? spiny water flea, invasive species in the North American Great Lakes, introduced via untreated ballast water, ou...

So most tests so far I've seen provide 46% IPA, Vegetable oil, Distilled water, 10% NaCl, and Saturated NaCl. Saturated NaCl solutions I think are around 26.8% NaCl. This won't be able to separate PC and PMMA by density, so is there any advice on how I should do this? I mean, if they give me a 25% ...

yup. either one of you can go next i guess...

http://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Dreissena_polymorpha.jpg/250px-Dreissena_polymorpha.jpg name, where is it native to, and how was it brought into American waters? Zebra mussel and brought to america by a cargo ship I think, thats all I know though... yes. anyone on the secon...