In a lab , the average measured density for Pre- 1982 pennies was 7.98g/cm3 . Given that the literature value for the density is 8.92 g/cm3 , calculate the percent error .

)in the deacon process for the manufacture of chlorine, hcl and o2 react to form cl2 and h2o. sufficient air (21 mole% o2, 79% n2) is fed to provide 35% excess oxygen, and the fractional conversion of hcl is 85%. calculate the mole fractions of the product stream components.