问题描述:
做PREP时遇到的数学难题,请牛人指教
1、TherateofacertainchemicalreactionisdirectlyproportaionaltothesquareoftheconcentrationofchemicalApresentandinverselyproportionaltotheconcentrationofchemicalBpresent.IftheconcentrationofchemicalBisincreasedby100%,whichofthefollowingisclosesttothepercentchangeintheconcentrationofchemicalArequiredtokeepthereactionrateunchanged?
(a)100%decrease(b)50%decrease(c)40%decrease(d)40%increase(e)50%increase