Three different phenomenon that can explain change of state of matter with examples

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %