Which layer of the earth contains melted silicone compounds a. core b. mantle c. biosphere d. asthenosphere e. lithosphere

Use the standard enthalpies of formation for the reactants and products to solve for the δhrxn for the following reaction. (the δhf of c2h4 is 52.26 kj/mol, co2 is -393.509 kj/mol, and h2o is -241.818 kj.) c2h4 (g) + 3o2(g) 2co2 (g) + 2h2o(g) δhrxn = the reaction is .

Which of the following is true about the speed of light? it depends on the wavelength.

The graph shows one consequence of urban sprawl. how did urban sprawl contribute to the change in biodiversity