The allowable concentration level of vinyl chloride, C₂H₃Cl, in the atmosphere in a chemical plant is 2.0⨉10⁻⁶ g/L. How many molecules per liter?

Verified step by step guidance

1. First, understand that the problem requires converting the concentration from grams per liter to molecules per liter. This involves using the molar mass of vinyl chloride and Avogadro's number.
2. Calculate the molar mass of vinyl chloride, C2H3Cl. Add the atomic masses of all the atoms in the molecule: 2 carbon atoms, 3 hydrogen atoms, and 1 chlorine atom.
3. Convert the given concentration from grams per liter to moles per liter by dividing the concentration (2.0⨉10−6 g/L) by the molar mass of vinyl chloride.
4. Use Avogadro's number (6.022⨉10^23 molecules/mol) to convert the concentration from moles per liter to molecules per liter. Multiply the moles per liter by Avogadro's number.
5. The result from the previous step will give you the number of molecules of vinyl chloride per liter in the atmosphere.