A. The reaction is a single-replacement reaction B. Aluminum atoms lose electrons from oxygen atoms
C. Aluminum atoms gain electrons from oxygen atoms
D. A double-replacement reaction takes place

Which statement correctly describes the relationship between frequency and wavelength?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory