Answer:
The combustion of methane or octane is exothermic; it releases energy. CH4 + 2 O2 → CO2 + 2 H2O + energy The energies of the products are lower than the energiies of the reactants
Add barium chloride. Reaction equation as shown:
Li2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2LiCl(aq)
Reaction will result in a white precipitate, making the solution look milky.
The answer is Solar, Wind, Geothermal, Hydrogen, Tidal, Wave, Hydroelectric, Biomass Energy.
Helium was discovered in 1868.
