the percent by mass of hydrogen in NH3 is equal to which of the following A)1/17x100 B) 3/17x100 c)17/3x100 D)17/1x100

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

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.