Which chemical is the reducing agent in the redox reaction below? zn(s) + fe2+(aq) > zn2+(aq) + fe(s) zn(s) fe2+(aq) zn2+(aq) fe(s)

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

What is the formula for calcium iodide

Explain what happens at the saturation point when adding salt to water at room temperature.