Which elements have similar behavior?
A. Barium
B. Silicon
C. Aluminum
D. Strontium
E. Osmium
F. Beryllium

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion