Question

One of the most widespread ennecarcinogens (cancer-causing agents) is berwola pyrene (223), found in coal dust, cigarette smoke, and even charcoalnited men. Are use This hydrocarbon shows 95.21 mass% C and 4.79 mass% El. What is the molecular formula for benzofapyrene? ​

Answer 1

The molecular formula for benzo[a]pyrene is C20H12. It is a potent carcinogen found in coal tar, tobacco smoke, and other sources.

Step-by-step explanation:

The molecular formula for benzo[a]pyrene, which is incorrectly spelled as 'berwola pyrene (223)' in the question, can be determined using its given mass percentages of carbon (C) and hydrogen (H). Benzo[a]pyrene has a mass percentage of 95.21% C and 4.79% H. To find the empirical formula, convert these percentages into moles by dividing them by the atomic masses of carbon and hydrogen, respectively, which gives us a larger number of moles of carbon compared to hydrogen. The ratio of these moles corresponds to the subscripts in the empirical formula, which can then be multiplied to reach the molecular formula if we have the molar mass of the compound. However, the molar mass is not given in the question; fortunately, the molecular formula for benzo[a]pyrene is well known in chemistry as C₂₀H₁₂, which can be confirmed through literature or reliable chemistry databases.

Benzo[a]pyrene is a polycyclic aromatic hydrocarbon (PAH) and is recognized as a potent carcinogen. It is found in coal tar, tobacco smoke, automobile exhaust, and charcoal-broiled meats. Exposure to benzo[a]pyrene has been linked to increased risks of various forms of cancer.

Answer 2

The molecular formula of benzopyrene, a carcinogenic hydrocarbon, can be deduced using its mass percentage of carbon and hydrogen, but additional steps or molar mass information are required to determine the exact formula.

Step-by-step explanation:

The molecular formula for benzopyrene, which is a polycyclic aromatic hydrocarbon (PAH) and a known carcinogen, can be determined using its given mass percentages of carbon (C) and hydrogen (H). The substance contains 95.21% carbon and 4.79% hydrogen by mass. To find the molecular formula, assume a 100 g sample, which means it would contain 95.21 g of carbon and 4.79 g of hydrogen. By dividing the mass of each element by its respective atomic mass (12.01 g/mol for carbon and 1.01 g/mol for hydrogen), we can find the molar ratio of the elements in the compound. The ratio simplifies to an empirical formula, which is a simple integer ratio of the atoms present. If necessary, this empirical formula is then multiplied by a whole number to reach the molecular formula that matches the known molar mass of benzopyrene, which is not provided in the question. Typically, additional steps or information would be required to ascertain the exact molecular formula of a compound.