A chemical commonly called dioxin has been very much in the news in the past few years- It is the byproduct of herbicide manufacture and is thought to be quite toxic- Its formula is C-12-H-4Cl-4O-2- If you have a sample of dirt -28-3 g- that contains 1-0 times 10-4- dioxin- the moles of dioxin in the dirt sample is expressed as x times 10-8- mol- Find the value of x as nearest integer-

Question

A chemical commonly called dioxin has been very much in the news in the past few years- It is the byproduct of herbicide manufacture and is thought to be quite toxic- Its formula is C-12-H-4Cl-4O-2- If you have a sample of dirt -28-3 g- that contains 1-0 times 10-4- dioxin- the moles of dioxin in the dirt sample is expressed as x times 10-8-  mol- Find the value of x as nearest integer-

Toppr Admin · Accepted Answer

The formula of dioxin -C12H4Cl4O2Molar mass of dioxin -12-12-4-1-4-35-5-2-16-322 g-molMass of dioxin -xA0-28-3-xD7-10-x2212-4100-2-83-xD7-10-x2212-5gNumber of moles of dioxin -2-83-xD7-10-x2212-5322-9-xD7-10-x2212-8-x-xD7-10-x2212-8Hence- x-9

The formula of dioxin =C12H4Cl4O2Molar mass of dioxin =12(12)+4(1)+4(35.5)+2(16)=322 g/molMass of dioxin =28.3×10−4100=2.83×10−5gNumber of moles of dioxin =2.83×10−5322=9×10−8=x×10−8Hence, x=9