What energy transformation occur in a hot air balloon A. kinetic>mechanical>light

B. mechanical>sound>electrical

C. chemical>thermal>kinetic

D. chemical>electrical>mechanica l

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Chromosome 17 is made of over million base pairs.