A 13. What is the coefficient in front of the Fe2O3 in the following reaction is properly balanced:
Fe(OH)3 ---?--Fe2O3 + H2O

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

Find the mass in grams of 1.37x1020 particles of h3po4

What is a property of a double replacement reaction