04/16/20

A metal with a specific heat of 0.70 cal/g℃ and a mass of 8.00g absorbs 48.0cal of heat. What will the temperature change of the metal be?

Having some trouble with this particular problem so if anyone is able to assist me, that would be great!

04/14/20

High-pressure liquid chromatography

If an HPLC procedure is running at a pressure of 2.95x10^8, what is it’s running pressure in torr?

The first species having circle of Willis (circulus arteriosus cerebri)?

I know mammals are not the only species that have this anatomical unit (i.e. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3982101/). But I was wondering what was the __first species__ that had a... more

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