Answer:
1. When oil is burned, the carbon dioxide (CO2) produced comes from the carbon atoms present in the oil itself. Oil is a hydrocarbon, which means it consists of hydrogen and carbon atoms. During the combustion process, the carbon atoms combine with oxygen (O2) from the air to form carbon dioxide (CO2). So, the increased carbon dioxide in the glass container after burning the oil comes from the carbon in the oil.
2. The energy provided by soybean oil to the bus ultimately comes from the sun. Soybeans are plants that undergo a process called photosynthesis. During photosynthesis, plants use sunlight, water, and carbon dioxide from the air to produce glucose (a type of sugar) and oxygen. The glucose serves as an energy source for the plant and is stored in various forms, including oils like soybean oil. So, the energy in soybean oil can be traced back to the sun's energy captured by the plants during photosynthesis. The sun's energy is converted into chemical energy through this process, which is then transferred to the soybean oil.
Step-by-step explanation: