Substance a contains 75% carbon and 25% hydrogen. substance b contains 80% carbon and 20% hydrogen. a and b are the same substance. a. true b. false

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

In which of these cases are the two wave points considered to be in phase with each other?

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .