-'Gasoline engine' what are the waste products form this engine ? what element must gasoline be composed of ?

-'fuel cell'what are the waste products from this cell ? what is the fuel used in the fuel cell?
MY ANSWERs :
- C02 , h20 and heat energy are waste products from gasoline . H and C must be composed.
- C02 and h20 arewaste products from fuel cell. oxidizing agent and H are the fuel used int he fuel cell.
Right ????right???

Right for gasoline. Since gasoline engines run using air input, a waste product of NOx is also produced but I don't know if you are to include that in your answer or not. Gasoline must contain the elements carbon and hydrogen; the PRODUCTS are CO2 and H2O

Fuel cells may run on one of several fuels; i.e., hydrogen, methanol, natural gas, etc. Hydrogen probably is the most common.I can't tell from your post what your answer is for waste product from fuel cell. It is H2O if you are using H2 and O2.

Your answers are partly correct. Let me provide you with more accurate explanations:

- Waste products from a gasoline engine include carbon dioxide (CO2), water vapor (H2O), and heat energy. These byproducts are the result of the combustion process of the gasoline. So, your answer about CO2, H2O, and heat energy is correct.

- Gasoline, as a fuel, must primarily be composed of carbon (C) and hydrogen (H) elements. These elements, in the form of hydrocarbons, are responsible for the energy released during combustion.

- Waste products from a fuel cell vary depending on the type of fuel cell used. However, one common type of fuel cell, called a proton exchange membrane fuel cell (PEMFC), produces waste products including water vapor (H2O) and heat energy. Therefore, your answer regarding H2O as a waste product is correct.

- The choice of fuel for a fuel cell depends on the specific type of fuel cell and its requirements. Some commonly used fuels for fuel cells include hydrogen gas (H2), methanol (CH3OH), and natural gas (CH4). The fuel is used as the source of energy that produces electricity through electrochemical reactions within the fuel cell.

- The statement regarding the oxidizing agent is not accurate. In a fuel cell, an oxidizing agent (typically oxygen from the air) is required to combine with the fuel and facilitate the electrochemical reactions that produce electricity. It is not considered a waste product.

In summary:
- Waste products from a gasoline engine: CO2, H2O, and heat energy.
- Gasoline must primarily be composed of C and H elements.
- Waste products from a fuel cell (such as a PEMFC): H2O and heat energy.
- The fuel used in a fuel cell depends on the type of fuel cell but commonly includes H2, CH3OH, or CH4.