A photon with a wavelength of 397nm is emitted from an electron in energy level 7 of a Hydrogen atom. What is the new energy level of the electron?

Predict the products butane (c4h10) + oxygen —>

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction

What factor besides temperature affects the boiling point of water? a. mass b. number of moles c. volume d. pressure