Answer: Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat.
Explanation: When a hydrogen-carbon-based fuel (like gasoline) burns, the exhaust includes water (hydrogen + oxygen) and carbon dioxide (carbon + oxygen).
The rectum is right above the anus
Redox is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species undergoing oxidation while another species undergoes reduction.
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The total charge on the right-hand side is 94-1=93, so the atomic number is <u>93</u>.
The total mass on the right-hand side is 239+0=239, so the mass number is <u>239</u>.