When an object such a a stone is dropped into water, it disturbs the surface of the water. waves form at the surface of the water and travel outward from the point of the disturbance.

the diagram below is based on a single frame from a video of the waves that formed when a stone was dropped into water.

if a student were to measure the distance labeled as "z," she would know the value of the of the wave.
a.
wavelength
b.
amplitude
c.
radius
d.
frequency

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.