Consider the balanced chemical reaction below and determine the percent yield for sodium bromide if 3.87 moles of iron(III) bromide yielded 10.4 moles of sodium bromide. 2FeBr3 + 3Na2S → Fe2S3 + 6NaBr

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm