The question is~ Which is not a biomass energy source?​

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

Which formula can be used to calculate the molar mass of hydrogen peroxide

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world