Radio stations identify themselves by their position on the radio dial such as 90.1 and 93.3. this number is based on the number of waves or cycles that pass a fixed point in a specific unit of time. to which property of a wave does this identification number refer? a. loudness b. amplitude c. wavelength d. frequency

Consider this initial-rate data at a certain temperature for the reaction described by

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?