The molecular formula for butane is C4H10. Determine the percent composition for each element in the compound

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?

If two objects at different te,peraure are in contact with each other what happens to their temperature

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