When light rays appear to be coming from behind a mirror, what type of image has been formed

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

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements