You have two pure substances that you cannot identify. Each sample is solid at room temperature. Describe at least five stopes in the appropriate sequence that you wpild take to be able to identify the substance

Can smoke be transformed into liquid or used as energy or both?

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

Idon’t know how to solve this question