How many moles of h2so4 are there in 0.035l of a 0.500 solution ?

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

State the formula for density in words and mathematical symbols

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.