Each element (as seen in the picture) has its own emission spectrum. You may call it a "fingerprint" that is unique to each element. Explain why hydrogen and oxygen have a different number of line spectra.

Use the table to answer question 22 23 and 24.

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.