Nuris is writing a paper on the scientist who first named cells after studying cork under a microscope. Who is her paper about? A. Virchow
B. Schwann
C. Hooke
D. Leeuwenhoek

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

In medium-sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form , but larger stars can produce elements as heavy as

What is the molecular formula of ferrous nitrate and ferric nitrate