C3H8+3O2 = 3CO2+4H2O what is the enthalpy combustion

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

What is i fracture in the crust called when land move up, down or sideways

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.