Starlight is alternately shifted from the blue part of the light spectrum to the red part what does this mean about the length of light waves and movement of the star

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm

What is the common name for the compound shown here? enter the common name of the compound shown?