15 will mark ! what is the correct name for this formula: bacl2? a. barium chloride b. barium dichloride c. barium dichlorine d. barium chlorine

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 the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.