What mass of CF4(in grams) contains 1.8x1024 F atoms? ( Helpful hint: there are 4 F atoms in 1 molecule of CF 4 )

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron