Help please I’ll give you brainless

How many moles are in 123.0 grams of kclo4?

Condensation happens when water vapor cools. true or false? ?

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.