Polyethylene is a hydrocarbon polymer used to produce food -storage bags and many other flexible plastic items. A combustion analysis of a 1.26-g sample of polyethylene yields 3.94 g of C*O_{2} and 1.61 g of H_{2} * O What is the empirical formula of polyethylene ? Write numbers only to 3 significant figures (no units) and for numbers < 1 include a "" before the decimal point .

66.40g CCl4 in molecules 43.29kg NAHCO3 in formula units 3.27x10^4g Na3PO4 in formula units (express your answer using for significant figures)

1:44 1 Send a chat Click in the answer box to activate the palette. Leaded gasoline contains an additive to prevent engine knocking. On analysis, the additive compound is found to contain carbon, hydrogen, and lead (Pb) (hence, leaded gasoline). When 51.36 g of this compound is burned in a combustion analysis apparatus, 55.90 g of CO2 and 28.61 g of H,0 are produced. Determine the empirical formula of the gasoline additive.

Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties. One such investigator, while reorganizing their shelves, has mixed up several small vials and is unsure about the identity of a certain powder. Elemental analysis of the compound reveals that it is 67.31 % carbon, 6.978% hydrogen, 4.617% nitrogen, and 21.10% oxygen by mass.     Which of the compounds could the powder be? C17H19NO3C17H19NO3 = morphine, analgesic C17H21NO4C17H21NO4 = cocaine, illicit drug C7H5N3O6C7H5N3O6 = 2,4,6-trinitrotoluene (TNT), commonly used explosive C10H15NC10H15N = methamphetamine, stimulant C4H5N2OC4H5N2O = caffeine, stimulant C11H15NO2C11H15NO2 = 3,4-methylenedioxymethamphetamine (MDMA), illicit drug C21H23NO5C21H23NO5 = heroin, illicit drug C3H6NO3C3H6NO3 = hexamethylene triperoxide diamine (HMTD), commonly used explosive